Creator here. Yes, I confirm that those terms are taken directly from the Library's subject headings: https://en.wikipedia.org/wiki/Library_of_Congress_Subject_He... . And yes, the Library's subject headings, and really the broader practice of describing cultural/historical materials, are sometimes problematic and constantly evolving.

Seems the filters are automatically taken from the Library of Congress items themselves, and in the case of "Jews", there is only a single item that matches that filter: https://www.loc.gov/item/00694076/ ("Cohen on his honeymoon")

There is a bunch of other filters that doesn't make much sense is a musical context, like "facial expressions" or "dough" but again, those come from the Library of Congress, not from CitizenDJ, it seems at least.

I have not downloaded....

What sounds are under the jew category?