Couch co-op with the kid suggestions?

My kid loves to play games with me, he's 6 years old and luckily we have quite the number of games, sadly not all offer the relaxed Couch co-op he really wants. Recently he's been a bit under the weather and we've been playing a bit more. Do you guys have any gems recommended for us?

We've done so far: - Lego city undercover - Lego jurassic world - (We've got Lego movie, incredible, avengers and villains on the shelf but grew a bit bored with the Lego formula) - Kirby star allies - Kirby forgotten world - Luigi mansion 3 - Mario Odyssey - Mario Wonder - Other Mario platformers - Mario kart - Mario parties