Golem - i love golem so much. their music has elements of folk-punk and Romani music mixed in and a lot of the lyrics are super funny. my favorite song by them is probably Citizen Boris.
Nikitov - their albums are very lovely. they are from the Netherlands.
The Klezmatics - possibly the most popular band on this list. their klezmer versions of Woody Guthrie songs are quite well known, I think. I like the album "Jews with horns"
Kruzenshtern & Parohod - israeli klezmer-punk-no wave-prog band. if you want something really weird id recommend this
Daniel Kahn & the Painted Birds (or Daniel Kahn in general) - love the album "the broken tongue"
Schmekel is pretty well known I think? theyre a folk punk band thats either all or mostly trans men
John Zorn - haven't listened to him much but my partner loves him. also check out his record label its like mostly jewish music
Oy Division - come on. the name. i mean come on
and just some other random stuff:
chabad religion - i am clearly a sucker for puns. they made an album thats all punk rock versions of jewish traditional songs and prayers
Sephardic Romances: Traditional Jewish Music From Spain - this album is absolutely beautiful. listen to ladino folksong goddamit
Hanukkah+ - hanukkah album by various artists mostly indie rock bands and jack black
BLP Kosher. goofy rapper from Boca. thank me later