I like listening to podcasts that casually destroy my worldview, which means a lot of history and politics podcasts while working. I have 2 suggestions and a secret 3rd option!

First is The Deprogram, a podcast about various topics relating to socialism and leftism. The bromance is strong with this one, it's hilarious. The humor can potentially be a turn off though, very rarely they'll take a joke too far. However the educational info they provide is more than worth looking past imo.

Second is UNFTR, or Unfuck the Republic. This is a much smaller podcast, but the audio quality is great. His voice is very soothing, something tells me he worked in radio at one point. The stuff on youtube is on the shorter side, but still very good.

The third option is one you haven't thought of before, but look up archival footage of speeches! Some of my favorite youtube archive channels are Afromarxist and the Micheal Parenti Library