diff --git a/.vscode/settings.json b/.vscode/settings.json
index 944e5ab..06083a4 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -57,7 +57,7 @@
         "cwd": "${workspaceFolder}",
         "program": "${workspaceFolder}/.venv/bin/bam_masterdata",
         "justMyCode": false,
-        "args": ["export-entities-to-json"]
+        "args": ["export_to_json"]
       },
       {
         "name": "BM export-to-excel",
@@ -66,7 +66,7 @@
         "cwd": "${workspaceFolder}",
         "program": "${workspaceFolder}/.venv/bin/bam_masterdata",
         "justMyCode": false,
-        "args": ["export-entities-to-excel"]
+        "args": ["export_to_excel"]
       },
     ]
   },
diff --git a/bam_masterdata/cli/entities_to_excel.py b/bam_masterdata/cli/entities_to_excel.py
index dff1eaf..36a176e 100644
--- a/bam_masterdata/cli/entities_to_excel.py
+++ b/bam_masterdata/cli/entities_to_excel.py
@@ -45,6 +45,7 @@ def entities_to_excel(
                     val = getattr(obj, f_set)
                 row.append(val)
             worksheet.append(row)
+            worksheet.append([""])  # empty row after entity definitions
         return None
 
     # All other datamodel modules
@@ -69,8 +70,8 @@ def entities_to_excel(
         ]
         worksheet.append(header_values)
 
-        # Properties assignment for ObjectType
-        if obj_instance.cls_name == "ObjectType":
+        # Properties assignment for ObjectType, DatasetType, and CollectionType
+        if obj_instance.cls_name in ["ObjectType", "DatasetType", "CollectionType"]:
             if not obj_instance.properties:
                 continue
             worksheet.append(obj_instance.properties[0].excel_headers)
diff --git a/bam_masterdata/datamodel/collection_types.py b/bam_masterdata/datamodel/collection_types.py
index 9b5ca4d..fd95c03 100644
--- a/bam_masterdata/datamodel/collection_types.py
+++ b/bam_masterdata/datamodel/collection_types.py
@@ -1,4 +1,7 @@
-from bam_masterdata.metadata.definitions import CollectionTypeDef, PropertyTypeAssignment
+from bam_masterdata.metadata.definitions import (
+    CollectionTypeDef,
+    PropertyTypeAssignment,
+)
 from bam_masterdata.metadata.entities import CollectionType
 
 
diff --git a/bam_masterdata/metadata/entities.py b/bam_masterdata/metadata/entities.py
index 6de4774..7970b6e 100644
--- a/bam_masterdata/metadata/entities.py
+++ b/bam_masterdata/metadata/entities.py
@@ -55,7 +55,8 @@ def to_dict(self) -> dict:
     @property
     def cls_name(self) -> str:
         """
-        Returns the entity name of the class as a string to speed up checks.
+        Returns the entity name of the class as a string to speed up checks. This is a property
+        to be overwritten by each of the abstract entity types.
         """
         return self.__class__.__name__
 
@@ -108,6 +109,13 @@ def model_validator_after_init(cls, data: Any) -> Any:
 
         return data
 
+    @property
+    def cls_name(self) -> str:
+        """
+        Returns the entity name of the class as a string.
+        """
+        return "ObjectType"
+
 
 class VocabularyType(BaseEntity):
     """
@@ -147,10 +155,27 @@ def model_validator_after_init(cls, data: Any) -> Any:
 
         return data
 
+    @property
+    def cls_name(self) -> str:
+        """
+        Returns the entity name of the class as a string.
+        """
+        return "VocabularyType"
+
 
 class CollectionType(ObjectType):
-    pass
+    @property
+    def cls_name(self) -> str:
+        """
+        Returns the entity name of the class as a string.
+        """
+        return "CollectionType"
 
 
 class DatasetType(ObjectType):
-    pass
+    @property
+    def cls_name(self) -> str:
+        """
+        Returns the entity name of the class as a string.
+        """
+        return "DatasetType"