Work in progress. Let me know what I'm missing.
RPG:
Disgaea 5 Complete
Dragon Quest X
Dragon Quest XI
Dragon Quest Heroes 1&2
I Am Setsuna
Octopath Traveler
Shin Megami Tensei Switch
Stardew Valley
Unknown Tales of... game
Xenoblade Chronicles 2
Adventure:
The Binding of Issac: Afterbirth
The Legend of Zelda: Breath of the Wild
Lego City Undercover
Minecraft Story Mode
The Elder Scrolls V: Skyrim
Oceanhorn: Monster of Uncharted Seas
Rime
Riverside
The Sacred Hero
Seasons of Heaven
Skylanders Imaginators
Syberia 3
Action:
Cube Life: Island Survival
Fire Emblem Warriors
Has Been Heroes
Minecraft
No More Heroes 3
Super Bomberman R
Sports:
FIFA
NBA 2K18
Steep
Platformer:
Monster Boy and the Cursed Kingdom
Sonic 2017
Sonic Mania
Rayman Legends
Shovel Knight: Treasure Trove
Super Mario Odyssey
Terraria
Wonder Boy: The Dragon's Trap
Yooka-Laylee
Mini Game/Casual:
1, 2 Switch
Snipperclips
Fighting
Arms
Dragonball Xenoverse 2
Ultra Street Fighter 2
Unknown Blazblue game
Simulator:
Constructor HD
Farming Simulator
Racing:
Fast RMX
Mario Kart 8 Deluxe
Redout
Rise: Race the Future
Puzzle:
Puyo Puyo Tetris
Shooter:
Splatoon 2
Rhythm:
Just Dance 2017
Unknown Taiko Drum Master game
Strategy:
Dungeon of Zaar
Nobunagas Ambition: Sphere of Influence
Romance of the Three Kingdoms XIII
So, the list in the OP presents 58 titles. Considering how Nintendo said that there are "more than 80 titles in active development", it means there are at least other 22 unknown titles for now.