Create a report on data category using article type
|Knowledge Article Number||000220275|
|Description||The ability to report on article types can give you some great insight into how your content is performing.|
While this direct report isn't currently available, you can perform the following workaround from the User Workbench or Developer Console.
1. Select DataCategoryGroupName,Id,ParentId from Knowledgebase__DataCategorySelection.
2. Above query will give you datacategory with articleID.
Heads up - Replace “Knowledgebase” with your article type in above query.