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!
Loading Ready Run streams a lot of stuff. And you might like the dessert bus for hope fundraiser happening in November.
Specifically I would say the following streams fit the bill: