We Were Here and its sequels seem like the perfect slowish paced coop puzzle games for you guys. Operation Tango and Escape Simulator are similar and also great. A Way Out is similar to It Takes Two, with a more serious story. Monster Prom/Monster Camp and The Yahweh are co-op visual novels. Clandestine is a Co-op stealth game where one player plays as a spy, fps style, while the other plays as a hacker providing overwatch by controlling cameras and doors, giving directions, etc. Keep Talking and Nobody Explodes is another asymmetrical co-op game where one person is trying to defuse a bomb by solving puzzles and the other is trying to help by reading the manual. The defuser has to tell the other person what’s going on so they can give the right instructions, much sillier than it sounds.