It's been a while since I've played on the Switch but I'm actually playing some old classics right now that I never had the chance to play when I was younger. Currently Super Metroid and Ocarina of Time through Switch Online. I know I could emulate them and probably play superior version, but meh, I'm lazy.
Majora's Mask will be next after that and I might try Earthbound, a game I've often seen mentioned among SNES JRPG classics but never really knew what it was about. Some of the GBA games on there also look pretty interesting, like Minish Cap, Metroid Zero Mission and Fusion. Eventually I might actually play some new games on this thing.