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 watching Let’s Plays for the same reason as you, and while it isn’t a group channel I heartily recommend Welonz. She is very thorough and approaches every game with great respect, usually giving a summary of her overall thoughts at the end.
I found her because of her VTM: Bloodlines LP, but her Witcher 3 and Cyberpunk ones are also fantastic.