i've mostly stopped listening to "serious" podcasts (aside from blowback when that comes out, and the occasional episode of citations needed) and now listen mostly to communists talking about the politics of childrens cartoons

• a more civilized age: covers star wars in vaguely chronological order, talking about the political and philosophical implications of the worldbuilding therein. most of the podcast is covering the clone wars and rebels kids shows, but they do the movies and live action shows as well
• the great gundam project: 2 people watch all of gundam in release order and become communists along the way to understand the worldbuilding better. great coverage of a fascinating franchise that covers so much ground
• the shrieking shack: people who grew up with harry potter revisit it as adults to talk about just how rancid that series is and how dogshit the writing is in the later books. has the bonus of coming out as jkr started to go mask off so if you're curious about her journey there they cover it in a lot of detail
• homestuck made this world: leftist academics talk about homestuck and why it's a fascinating microcosm of the broader internet and how culture has developed