The one at lemmy.world has been shut down and moved to lemm.ee, from what it seems. Not exactly what I'm looking for, but those are great options too. Thank you for the recommendations!
Which one? !adhd@lemmy.dbzer0.com? I'm in it already; I was looking for something a little more 'serious'.
I browsed the communities introvertcatto mentioned, and I didn't come across any political content.