I have way too many in my feed, I swear every time I unsubscribe from one I haven’t listened to in a while, two more take its place.
To answer my own question, it would probably have to be RevLeft Radio for sheer educational and inspirational purposes. Top tier leftist podcast. I do like trillbillies for a little more levity with my depressing leftist content though.
the michael and us podcast is probably the only one that didn't make me want to quit listening to them after going through almost all of their catalog in a short period of time. i'm big into media/art criticism and there is a dearth of that on the left.