"Internet nexus of cultural Judaism" — Examiner.com
And her son is not played by Jewish actors. (at least I don't think a Nunzio and Matteo Pascale would be Jewish). But Mrs. Maisel's mother-in-law is played by a Jewish actress. I think it's interesting that the positive Jewish characters are played by gentiles and the more negative Jewish characters are played by Jewish actors. But maybe that's just me.
Transparent -- another show about a Jewish family -- I think has literally zero Jewish actors beyond Judith Light (and Jeffrey Tambor, before he got infamously booted). Even the rabbi is Catholic. Must be the opposite of equal opportunity in Hollywood.