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!
How about co-op multiplayer? I’ve seen a few of those for Baldur’s Gate 3. Like Neil Newbon or Jennifer English. Neil plays with his friend Tom (whose surname I have forgotten) and Jennifer with her girlfriend Aliona Baranova. Except for Tom all of them acted in the game.