I'm currently playing through It Takes Two on Switch with my partner and it's really good.
It's very "Nintendo" in its design philosophy, in that it will introduce a new gameplay mechanic, use it in a series of increasingly clever and tricky challenges, then move onto the next, much like in 3D Mario or Zelda.
It's also low key one of the best ports of a demanding PS4 game to Switch; the graphics hold up really well, with well judged nips and tucks instead of harsh cuts.
Highly recommend it to anyone looking for some co-op fun.