in csv, DataType's subTypeOf is
https://schema.org/http://www.w3.org/2000/01/rdf-schema#Class. it should be https://schema.org/Class
or just http://www.w3.org/2000/01/rdf-schema#Class

you could also find raw data with 'search
http://schema.org/http://www.w3.org/2000/01/rdf-schema#Class' in
https://raw.githubusercontent.com/schemaorg/schemaorg/main/data/releases/15.0/schemaorg-current-http-types.csv