I play deemo with my wife on switch on the TV, I know it was meant for touch, but we got way more milage by enjoying the music from the TV and taking turns that way. I also tried Voex, but the music wasn't as interesting. I'll look into cytus, but I'm wondering if there aren't any other couch rhythm game
The first Cytus got a remake on Switch as Cytus Alpha. Very different music from Deemo but I personally prefer it. Try Taiko no Tatsujin too, I think it plays well while sitting on the couch.