These udemy skills look cool:

https://www.udemy.com/course/taxonomy-and-thesaurus-development-using-skos/

https://www.udemy.com/course/tigergraph/

https://www.udemy.com/course/practical-rdf-and-sparql/

https://www.udemy.com/course/knowledge-graph-for-beginners/

https://www.udemy.com/course/rapid-prototyping-to-build-knowledge-graph-solutions/

https://www.udemy.com/course/practical-knowledge-modelling/