I might want to pick up a Neo Geo game on the Switch.
Any particular one I should try first?
I can't speak for most of them as I didn't buy them, but I picked up Waku Waku 7 and enjoyed it well enough. I tend to have a taste for color and insanity first and foremost when I go to pick out games though. On that front Waku Waku 7 definitely does it's job LOL.
If you wanna judge by some fancy metric I'm not the one to take advice from. What I will do is list off the playable characters, which true to the name there are seven of. The thing with this game is that it's almost a cross-section of anime cliches, but there's so many different kinds of them mixed when they normally really aren't that it just kinda starts having fun with itself just by existing.
Rai: Generic Shonen Protagonist
Slash: Blue Haired Anime Sword User. . .monster slayer in a trenchcoat
Tesse: Robot Maid. Gives me almost kind of a Princess Peach/Villager vibe with the way her attacks often lean into the maid part, although the robot part is just as prominent.
Politank-Z: A police officer and his dog dual piloting a tank
Mauru: Clawed Rabbit Monster Thing with a little girl riding on his back
Dandy-J: Buff bearded middle-aged guy wearing a cowboy hat. His main weapon is a whip. . .also he has a girl with him that sometimes tosses his pet cat at you
Arina: Generic Bunny Eared Anime Girl
You notice that somewhere towards the middle of that list logic drops off the face of the earth? That's the beauty of this game.
*EDIT* Also during single player there's a bonus round against a non-playable character that is essentially Ryu as a sandbag. Ever wanted to see that?