For Switch exclusives I'd recommend:

• Fire Emblem: Three Houses
• Fire Emblem Engage

They're both great for opposite reasons - Three Houses has a more interesting story and cast, while Engage has some of the best gameplay in the franchise.

• Kirby and the Forgotten Land

All Kirby games are good fun, and this is one of their games best IMO.

• The Legend of Zelda: Link's Awakening
• Super Mario RPG

Excellent remakes, but keep in mind that both are kinda short compared to recent RPGs.

• Super Mario 3D World + Bowser’s Fury

A really fun Mario game that got a bit overlooked due to the WiiU's low popularity. Probably my favorite Mario game for coop play.

• Metroid Prime Remastered

Fantastic game despite its age, and the remaster is absolutely perfect. The atmosphere and OST are fantastic.

• Xenoblade Chronicles 2
• Xenoblade Chronicles 3

Huge open-world JRPGs with very interesting worlds. Both game have some significant flaws, but the package as a whole is fantastic, with XC2 being the only game in the last decade I spent 200h+. Also, both have amazing DLCs, each including a 20h+ story with new cast, mechanics and world.

• Shin Megami Tensei V

Kinda surprised this is still a Switch exclusive, but it's a fantastic Atlus JRPG. Unlike their more popular Persona series this one is more focused on gameplay and atmosphere as you explore a post-apocalyptic world and recruit demons to battle alongside you.