Examples include: Scary Game Squad, Gamegrumps, Team Double Dragon, and the like.
I just find let's plays a lot more entertaining when multiple people are playing and chatting than when it's just one person rambling. But these are weirdly hard to search for!
I like RKG! They play Dark Souls and those types of games- one of them plays, the other two chat about the lore of the game or whatever. Right now they’re playing Elden Ring!