I don't know if it's been mentioned in here (or if this is even the place to plug it) but I've been listening to a role playing podcast called Spout Lore recently. It's based on a game called Dungeon World, which is a modified version of Apocalypse World.
The basic premise is the DM has a situational overview in mind and the players assist in building the world - for instance, they might go to a new town, the DM will say "it's a little fishing hamlet - Player X, what do you notice around the place?" and then they collaboratively flesh it out.
Mechanically it's pretty straightforward, most rolls are made with 2d6 plus a modifier. Under a 6 is a fail, 7-9 is a partial success and 10+ is a total success. The only thing different off the top of my head is damage die although there's probably more.
It's a lot more comedically focused than Critical Role and in general there's not a lot of danger placed on the characters, it's more about role playing and you really get the sense it's just a few mates having fun. The humour can be very crass but very funny, I generally will get a lot more laughs in a 30-50 minute episode than a four hour CR marathon. They're just working their way through the fourth season now. If you want a low effort comedy podcast with tabletop elements in then I highly recommend it.