diff --git a/applications/utilities/mesh/manipulation/setSet/setSet.C b/applications/utilities/mesh/manipulation/setSet/setSet.C
index 73a5727663..b717e9f152 100644
--- a/applications/utilities/mesh/manipulation/setSet/setSet.C
+++ b/applications/utilities/mesh/manipulation/setSet/setSet.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2018 OpenFOAM Foundation
-    Copyright (C) 2017-2022 OpenCFD Ltd.
+    Copyright (C) 2017-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -158,7 +158,7 @@ void printSets(Ostream& os, const IOobjectList& objects)
 {
     label n = 0;
 
-    for (const IOobject& io : objects.sorted<SetType>())
+    for (const IOobject& io : objects.csorted<SetType>())
     {
         SetType set(io);
         if (!n++) os << SetType::typeName << "s:" << nl;
diff --git a/applications/utilities/mesh/manipulation/setsToZones/setsToZones.C b/applications/utilities/mesh/manipulation/setsToZones/setsToZones.C
index e5b86055dd..a42a9ec7ee 100644
--- a/applications/utilities/mesh/manipulation/setsToZones/setsToZones.C
+++ b/applications/utilities/mesh/manipulation/setsToZones/setsToZones.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2021-2022 OpenCFD Ltd.
+    Copyright (C) 2021-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -105,7 +105,7 @@ int main(int argc, char *argv[])
         << endl;
 
 
-    for (const IOobject& io : objects.sorted<pointSet>())
+    for (const IOobject& io : objects.csorted<pointSet>())
     {
         // Not in memory. Load it.
         pointSet set(io);
@@ -137,7 +137,7 @@ int main(int argc, char *argv[])
 
     wordHashSet slaveCellSets;
 
-    for (const IOobject& io : objects.sorted<faceSet>())
+    for (const IOobject& io : objects.csorted<faceSet>())
     {
         // Not in memory. Load it.
         faceSet set(io);
@@ -259,7 +259,7 @@ int main(int argc, char *argv[])
 
 
 
-    for (const IOobject& io : objects.sorted<cellSet>())
+    for (const IOobject& io : objects.csorted<cellSet>())
     {
         if (!slaveCellSets.found(io.name()))
         {
diff --git a/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C b/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C
index 7398cb581d..1ae4fb4ca8 100644
--- a/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C
+++ b/applications/utilities/parallelProcessing/reconstructPar/reconstructPar.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2015-2022 OpenCFD Ltd.
+    Copyright (C) 2015-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -653,7 +653,7 @@ int main(int argc, char *argv[])
                         const labelList& cellMap =
                             procMeshes.cellProcAddressing()[proci];
 
-                        for (const IOobject& io : objects.sorted<cellSet>())
+                        for (const IOobject& io : objects.csorted<cellSet>())
                         {
                             // Load cellSet
                             const cellSet procSet(io);
@@ -684,7 +684,7 @@ int main(int argc, char *argv[])
                         const labelList& faceMap =
                             procMeshes.faceProcAddressing()[proci];
 
-                        for (const IOobject& io : objects.sorted<faceSet>())
+                        for (const IOobject& io : objects.csorted<faceSet>())
                         {
                             // Load faceSet
                             const faceSet procSet(io);
@@ -714,7 +714,7 @@ int main(int argc, char *argv[])
                         const labelList& pointMap =
                             procMeshes.pointProcAddressing()[proci];
 
-                        for (const IOobject& io : objects.sorted<pointSet>())
+                        for (const IOobject& io : objects.csorted<pointSet>())
                         {
                             // Load pointSet
                             const pointSet procSet(io);
diff --git a/applications/utilities/parallelProcessing/redistributePar/parPointFieldDistributorTemplates.C b/applications/utilities/parallelProcessing/redistributePar/parPointFieldDistributorTemplates.C
index e048bed283..4c1964f076 100644
--- a/applications/utilities/parallelProcessing/redistributePar/parPointFieldDistributorTemplates.C
+++ b/applications/utilities/parallelProcessing/redistributePar/parPointFieldDistributorTemplates.C
@@ -185,11 +185,11 @@ Foam::label Foam::parPointFieldDistributor::distributePointFields
 {
     typedef GeometricField<Type, pointPatchField, pointMesh> fieldType;
 
-    UPtrList<const IOobject> fieldObjects
+    const UPtrList<const IOobject> fieldObjects
     (
         selectedFields.empty()
-      ? objects.sorted<fieldType>()
-      : objects.sorted<fieldType>(selectedFields)
+      ? objects.csorted<fieldType>()
+      : objects.csorted<fieldType>(selectedFields)
     );
 
     label nFields = 0;
diff --git a/src/OpenFOAM/parallel/fieldsDistributor/fieldsDistributorTemplates.C b/src/OpenFOAM/parallel/fieldsDistributor/fieldsDistributorTemplates.C
index f070fe8b16..8bddfe9130 100644
--- a/src/OpenFOAM/parallel/fieldsDistributor/fieldsDistributorTemplates.C
+++ b/src/OpenFOAM/parallel/fieldsDistributor/fieldsDistributorTemplates.C
@@ -65,7 +65,7 @@ void Foam::fieldsDistributor::readFields
     typedef GeometricField<Type, PatchField, GeoMesh> GeoField;
 
     // GeoField fields - sorted for consistent order on all processors
-    UPtrList<const IOobject> fieldObjects(objects.sorted<GeoField>());
+    const UPtrList<const IOobject> fieldObjects(objects.csorted<GeoField>());
 
     // Construct the fields
     fields.resize(fieldObjects.size());
@@ -86,7 +86,7 @@ void Foam::fieldsDistributor::readFields
 )
 {
     // GeoField fields - sorted for consistent order on all processors
-    UPtrList<const IOobject> fieldObjects(objects.sorted<GeoField>());
+    const UPtrList<const IOobject> fieldObjects(objects.csorted<GeoField>());
 
     // Construct the fields
     fields.resize(fieldObjects.size());
diff --git a/src/finiteArea/distributed/faMeshDistributorTemplates.C b/src/finiteArea/distributed/faMeshDistributorTemplates.C
index 26d2da28f5..19ddc49404 100644
--- a/src/finiteArea/distributed/faMeshDistributorTemplates.C
+++ b/src/finiteArea/distributed/faMeshDistributorTemplates.C
@@ -310,8 +310,8 @@ Foam::label Foam::faMeshDistributor::distributeAreaFields
         const IOobject& io :
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     )
     {
@@ -368,8 +368,8 @@ Foam::label Foam::faMeshDistributor::distributeEdgeFields
         const IOobject& io :
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     )
     {
diff --git a/src/functionObjects/forces/forceCoeffs/forceCoeffs.C b/src/functionObjects/forces/forceCoeffs/forceCoeffs.C
index a80062e501..b749dcf81b 100644
--- a/src/functionObjects/forces/forceCoeffs/forceCoeffs.C
+++ b/src/functionObjects/forces/forceCoeffs/forceCoeffs.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2015-2022 OpenCFD Ltd.
+    Copyright (C) 2015-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -236,7 +236,7 @@ void Foam::functionObjects::forceCoeffs::writeIntegratedDataFileHeader
     writeHeader(os, "");
     writeCommented(os, "Time");
 
-    for (const auto& iter : coeffs_.sorted())
+    for (const auto& iter : coeffs_.csorted())
     {
         const auto& coeff = iter.val();
 
@@ -255,7 +255,7 @@ void Foam::functionObjects::forceCoeffs::writeIntegratedDataFile()
 
     writeCurrentTime(os);
 
-    for (const auto& iter : coeffs_.sorted())
+    for (const auto& iter : coeffs_.csorted())
     {
         const auto& coeff = iter.val();
 
@@ -359,16 +359,16 @@ bool Foam::functionObjects::forceCoeffs::read(const dictionary& dict)
 
         for (const word& key : coeffs)
         {
-            auto coeffIter = coeffs_.find(key);
+            auto iter = coeffs_.find(key);
 
-            if (!coeffIter.good())
+            if (!iter.good())
             {
                 FatalIOErrorInFunction(dict)
                     << "Unknown coefficient type " << key
                     << " . Valid entries are : " << coeffs_.sortedToc()
                     << exit(FatalIOError);
             }
-            auto& coeff = coeffIter.val();
+            auto& coeff = iter.val();
             coeff.active_ = true;
             Info<< "    - " << coeff << nl;
         }
@@ -412,7 +412,7 @@ bool Foam::functionObjects::forceCoeffs::execute()
     };
 
     // Always setting all results
-    for (const auto& iter : coeffs_.sorted())
+    for (const auto& iter : coeffs_.csorted())
     {
         const word& coeffName = iter.key();
         const auto& coeff = iter.val();
diff --git a/src/functionObjects/utilities/ensightWrite/ensightWriteImpl.C b/src/functionObjects/utilities/ensightWrite/ensightWriteImpl.C
index 1a7096b1a9..b55c4f19b3 100644
--- a/src/functionObjects/utilities/ensightWrite/ensightWriteImpl.C
+++ b/src/functionObjects/utilities/ensightWrite/ensightWriteImpl.C
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2016-2022 OpenCFD Ltd.
+    Copyright (C) 2016-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -46,7 +46,7 @@ Foam::label Foam::functionObjects::ensightWrite::writeVolFieldsImpl
     for
     (
         const GeoField& origField
-      : baseMesh.sorted<GeoField>(candidateNames)
+      : baseMesh.csorted<GeoField>(candidateNames)
     )
     {
         const word& fieldName = origField.name();
diff --git a/src/functionObjects/utilities/vtkWrite/vtkWriteImpl.C b/src/functionObjects/utilities/vtkWrite/vtkWriteImpl.C
index 9d3c60ac3e..0e6dfd2f15 100644
--- a/src/functionObjects/utilities/vtkWrite/vtkWriteImpl.C
+++ b/src/functionObjects/utilities/vtkWrite/vtkWriteImpl.C
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2018-2020 OpenCFD Ltd.
+    Copyright (C) 2018-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -43,7 +43,7 @@ Foam::label Foam::functionObjects::vtkWrite::writeVolFieldsImpl
     for
     (
         const GeoField& origField
-      : baseMesh.sorted<GeoField>(candidateNames)
+      : baseMesh.csorted<GeoField>(candidateNames)
     )
     {
         bool ok = false;
@@ -110,7 +110,7 @@ Foam::label Foam::functionObjects::vtkWrite::writeVolFieldsImpl
     for
     (
         const GeoField& origField
-      : baseMesh.sorted<GeoField>(candidateNames)
+      : baseMesh.csorted<GeoField>(candidateNames)
     )
     {
         bool ok = false;
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/KinematicSurfaceFilm/KinematicSurfaceFilm.C b/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/KinematicSurfaceFilm/KinematicSurfaceFilm.C
index e3fb81f101..2d471effaf 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/KinematicSurfaceFilm/KinematicSurfaceFilm.C
+++ b/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/KinematicSurfaceFilm/KinematicSurfaceFilm.C
@@ -5,7 +5,7 @@
     \\  /    A nd           | www.openfoam.com
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
-    Copyright (C) 2021-2022 OpenCFD Ltd.
+    Copyright (C) 2021-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -114,14 +114,13 @@ void Foam::KinematicSurfaceFilm<CloudType>::initFilmModels()
     // Set up area films
     if (areaFilms_.empty())
     {
-        UPtrList<const areaFilm> models
+        for
         (
-            mesh.time().objectRegistry::template sorted<areaFilm>()
-        );
-
-        for (const auto& model : models)
+            const areaFilm& regionFa
+          : mesh.time().objectRegistry::template csorted<areaFilm>()
+        )
         {
-            areaFilms_.append(const_cast<areaFilm*>(&model));
+            areaFilms_.push_back(const_cast<areaFilm*>(&regionFa));
         }
     }
 }
diff --git a/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/SurfaceFilmModel/SurfaceFilmModel.C b/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/SurfaceFilmModel/SurfaceFilmModel.C
index e097e5d3fb..d8c4743582 100644
--- a/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/SurfaceFilmModel/SurfaceFilmModel.C
+++ b/src/lagrangian/intermediate/submodels/Kinematic/SurfaceFilmModel/SurfaceFilmModel/SurfaceFilmModel.C
@@ -288,7 +288,7 @@ void Foam::SurfaceFilmModel<CloudType>::inject(TrackCloudType& cloud)
     for
     (
         const areaFilm& regionFa
-      : mesh.time().objectRegistry::template sorted<areaFilm>()
+      : mesh.time().objectRegistry::template csorted<areaFilm>()
     )
     {
         if (regionFa.active())
diff --git a/src/parallel/decompose/decompose/lagrangianFieldDecomposerReadFields.C b/src/parallel/decompose/decompose/lagrangianFieldDecomposerReadFields.C
index f3534f2d9d..9a62cb0e2b 100644
--- a/src/parallel/decompose/decompose/lagrangianFieldDecomposerReadFields.C
+++ b/src/parallel/decompose/decompose/lagrangianFieldDecomposerReadFields.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2022 OpenCFD Ltd.
+    Copyright (C) 2022-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -40,9 +40,9 @@ void Foam::lagrangianFieldDecomposer::readFields
 )
 {
     // List of lagrangian field objects
-    UPtrList<const IOobject> fieldObjects
+    const UPtrList<const IOobject> fieldObjects
     (
-        lagrangianObjects.sorted<IOField<Type>>()
+        lagrangianObjects.csorted<IOField<Type>>()
     );
 
     auto& cloudFields =
@@ -66,12 +66,12 @@ void Foam::lagrangianFieldDecomposer::readFieldFields
     // List of lagrangian field objects
     UPtrList<const IOobject> fieldObjects
     (
-        lagrangianObjects.sorted<IOField<Field<Type>>>()
+        lagrangianObjects.cobjects<IOField<Field<Type>>>()
     );
 
     fieldObjects.push_back
     (
-        lagrangianObjects.sorted<CompactIOField<Field<Type>, Type>>()
+        lagrangianObjects.cobjects<CompactIOField<Field<Type>, Type>>()
     );
 
     Foam::sort(fieldObjects, nameOp<IOobject>());
diff --git a/src/parallel/reconstruct/faReconstruct/faFieldReconstructorTemplates.C b/src/parallel/reconstruct/faReconstruct/faFieldReconstructorTemplates.C
index d9cf4a297f..e5c27951ff 100644
--- a/src/parallel/reconstruct/faReconstruct/faFieldReconstructorTemplates.C
+++ b/src/parallel/reconstruct/faReconstruct/faFieldReconstructorTemplates.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2016-2017 Wikki Ltd
-    Copyright (C) 2018-2022 OpenCFD Ltd.
+    Copyright (C) 2018-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -697,8 +697,8 @@ Foam::label Foam::faFieldReconstructor::reconstructAreaFields
     (
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }
@@ -717,8 +717,8 @@ Foam::label Foam::faFieldReconstructor::reconstructEdgeFields
     (
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }
diff --git a/src/parallel/reconstruct/reconstruct/fvFieldReconstructorTemplates.C b/src/parallel/reconstruct/reconstruct/fvFieldReconstructorTemplates.C
index 060238bfde..70a31ea8cc 100644
--- a/src/parallel/reconstruct/reconstruct/fvFieldReconstructorTemplates.C
+++ b/src/parallel/reconstruct/reconstruct/fvFieldReconstructorTemplates.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2018-2022 OpenCFD Ltd.
+    Copyright (C) 2018-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -707,8 +707,8 @@ Foam::label Foam::fvFieldReconstructor::reconstructInternalFields
     (
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }
@@ -727,8 +727,8 @@ Foam::label Foam::fvFieldReconstructor::reconstructVolumeFields
     (
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }
@@ -747,8 +747,8 @@ Foam::label Foam::fvFieldReconstructor::reconstructSurfaceFields
     (
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }
diff --git a/src/parallel/reconstruct/reconstruct/lagrangianReconstructorTemplates.C b/src/parallel/reconstruct/reconstruct/lagrangianReconstructorTemplates.C
index 2789f67282..ef025f22de 100644
--- a/src/parallel/reconstruct/reconstruct/lagrangianReconstructorTemplates.C
+++ b/src/parallel/reconstruct/reconstruct/lagrangianReconstructorTemplates.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2017 OpenFOAM Foundation
-    Copyright (C) 2018 OpenCFD Ltd.
+    Copyright (C) 2018-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -199,8 +199,8 @@ Foam::label Foam::lagrangianReconstructor::reconstructFields
         cloudName,
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }
@@ -221,13 +221,13 @@ Foam::label Foam::lagrangianReconstructor::reconstructFieldFields
 
     if (selectedFields.empty())
     {
-        fieldObjects.append(objects.sorted<fieldType>());
-        fieldObjects.append(objects.sorted<fieldTypeB>());
+        fieldObjects.push_back(objects.csorted<fieldType>());
+        fieldObjects.push_back(objects.csorted<fieldTypeB>());
     }
     else
     {
-        fieldObjects.append(objects.sorted<fieldType>(selectedFields));
-        fieldObjects.append(objects.sorted<fieldTypeB>(selectedFields));
+        fieldObjects.push_back(objects.csorted<fieldType>(selectedFields));
+        fieldObjects.push_back(objects.csorted<fieldTypeB>(selectedFields));
     }
 
     Foam::sort(fieldObjects, nameOp<IOobject>());
diff --git a/src/parallel/reconstruct/reconstruct/pointFieldReconstructorTemplates.C b/src/parallel/reconstruct/reconstruct/pointFieldReconstructorTemplates.C
index 01e26fe6c7..ae49e24b1b 100644
--- a/src/parallel/reconstruct/reconstruct/pointFieldReconstructorTemplates.C
+++ b/src/parallel/reconstruct/reconstruct/pointFieldReconstructorTemplates.C
@@ -6,7 +6,7 @@
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
     Copyright (C) 2011-2016 OpenFOAM Foundation
-    Copyright (C) 2018-2022 OpenCFD Ltd.
+    Copyright (C) 2018-2023 OpenCFD Ltd.
 -------------------------------------------------------------------------------
 License
     This file is part of OpenFOAM.
@@ -212,8 +212,8 @@ Foam::label Foam::pointFieldReconstructor::reconstructPointFields
     (
         (
             selectedFields.empty()
-          ? objects.sorted<fieldType>()
-          : objects.sorted<fieldType>(selectedFields)
+          ? objects.csorted<fieldType>()
+          : objects.csorted<fieldType>(selectedFields)
         )
     );
 }