See this ontology titled "Information Model for the Visual Arts" on Archivo.
A vocabulary (thesaurus) of visual arts terms is available in graphical form* and in an RDF file (TTL/text).
The current instance data can be browsed by selecting "Browse" at the top of the page. Query the model, vocabulary and instance data by selecting "More" at the top of the page, then "SPARQL"
See AI platform reviews of the ontology and thesaurus by OpenAI, MetaAI, Gemini and Perplexity. Select "More" at the top of the page, then "AI Reviews". The data in the instance model can be viewed with: