Flee made a similar thread awhile back where I went ahead and posted every Switch or Nintendo exclusive game available for the system, categorized by quality, so I'll do the same here and update it.
Sadly, the list hasn't actually grown that much.
The Legend of Zelda: Breath of the Wild
Super Mario Odyssey
Mario Kart 8 Deluxe
Blaster Master Zero
Azure Striker Gunvolt: Striker Pack
Mighty Gunvolt Burst
Not so good or niche:
DragonFangZ: The Rose & Dungeon of Time
Xenoblade Chronicles 2
Mario + Rabbids Kingdom Battle
Fire Emblem Warriors
Pokkén Tournament DX
Ultra Street Fighter II: The Final Challengers
Super Bomberman R
Super Putty Squad
Touch Battle Tank SP
Moorhuhn Knights & Castles
Puzzle Box Maker
New Frontier Days: Founding Pioneers
Super Ping Pong Trick Shot
Physical Contact: Picture Place
Physical Contact: 2048
Physical Contact: Speed
Soldam: Drop, Connect, Erase
Astro Bears Party
Super Beat Sports
Puzzle Adventure Blockle
Vroom in the Night Sky
One of the things added to the niche section is a game called DragonFangZ: The Rose & Dungeon of Time
, which looks like something you may or may not enjoy, I dunno. Price is definitely a big issue for some games right now.
If you enjoy Mario games, Odyssey is a safe buy.
The good news is that 2018 is gonna be a big year for the Switch, with Dark Souls and Bayonetta (if you're into that sort of thing) dropping very soon, among other things.
also knowing you, you might be into xenoblade chronicles 2