I would be curious about your favorite coop games. I often find them a big lacking, often being a bit unbalanced. An example is Battle for Hogwarts, where one game can be a walk in the park and another absolutely impossible and rarely is there a balanced match.
Aeon’s End is probably my favorite coop game, although I’m still not very good at it. It’s a deckbuilder, which is a genre I really like.
The Crew is a cooperative trick-taking game which is an absolute blast and fairly light. Both the original space one and the deep sea version are great.
On the grittier side, I think This War of Mine is worth playing at least once for the experience.