The best co-op indie horror game?

Hi Everyone!

I enjoy playing co-op games... when diaries allow that is. It's great to team up with friends to play something spooky (it helps that we're in the spooky season right now too), with a sprinkling of jump scares and enough reasons to feel scared to take that corner in a haunted house.

There are SO many co-op horror games out there, some of which I have played (like, Backrooms Society, Paranormal Cleanup and Sketchy's Contract, to name a few), many of which I have not.

What do the good people here recommend I try in the co-op indie horror genre?