A couple great 2D indie games I’d recommend are carrion (if you’re into horror movies) and katana zero. Most Halo campaigns as well as gears of war are pretty short.
I also absolutely appreciate shorter games. I’m in the same boat where my time is limited, I’ve recently gotten into games that are pick up and play, have short segments, and save often. From that perspective, Spider-Man remastered is perfect, and it’s kid friendly enough that I can play occasionally with my kids in the room.