Mario Tennis is a must own for a Switch owner, IMO.
Oh I didn't list it, but I got that too, it was bundled with the console. That and 1-2-Switch, which I don't think I ever even redeemed. The Tennis game is really good, I got blocked in the hall of mirrors kinda place and gave up, though.
I also have the Mega Man Collections, pre-ordered the Sega Genesis Collection (also coming out at midnight) and the SNK 40th Anniversary Collection (which, I guess, I wish was specifically a Neo-Geo collection instead)
Next after Smash, I'm getting ARMS.