I don't like rythm games at all, but loved Elite Beat Agents for its nice funny graphics and animations, and also for the musics, perfect for that game!
I also loved WarioWare games altough I generally dislike mini game compilations. Just too fun, too bizarre gameplay to not like it.
Not a fan of FPS games, but Doom is one of my favourite game on the Switch, it's absolutely a blast, too fast and too furious action.