This is the current supported title list in alphabetical order, please let me know if you would like another title added:
ARMS, Among Us, Animal Crossing: New Horizons, Bayonetta, Bayonetta 2, Celeste, Cuphead, Donkey Kong Country Tropical Freeze, Fall Guys, Famicom - Nintendo Switch Online, Fire Emblem: Three Houses, Fortnite, Hades, Hollow Knight, Hulu, Hyrule Warriors Definitive Edition, Hyrule Warriors: Age of Calamity, Kirby Star Allies, Kirby and the Forgotten Land, Mario + Rabbids Kingdom Battle, Mario Golf: Super Rush, Mario Kart 8 Deluxe, Mario Party Superstars, Mario Strikers: Battle League Football, Mario Tennis Aces, Metroid Dread, Minecraft: Bedrock Edition, Monster Camp XXL, Monster Prom XXL, Nintendo 64 - Nintendo Switch Online, Nintendo Entertainment System - Nintendo Switch Online, New Pokemon Snap, New Super Mario Bros. U Deluxe, Ninjala, Overcooked 2, Paper Mario: The Origami King, Pokemon Brilliant Diamond, Pokemon Legends: Arceus, Pokemon Shield, Pokemon Shining Pearl, Pokemon Sword, Pokemon UNITE, Pokemon: Let's Go, Eevee!, Pokemon: Let's Go, Pikachu!, Ring Fit Adventure, Rocket League, Sega Mega Drive - Nintendo Switch Online, Super Nintendo Entertainment System - Nintendo Switch Online, Sonic Colours: Ultimate, Sonic Mania, Splatoon 2, Splatoon 3, Stardew Valley, Super Famicom - Nintendo Switch Online, Super Mario 3D All-Stars, Super Mario 3D World + Bowser's Fury, Super Mario Maker 2, Super Mario Odyssey, Super Mario Party, Super Smash Bros. Ultimate, The Legend of Zelda: Breath of the Wild, The Legend of Zelda: Link's Awakening, The Legend of Zelda: Skyward Sword, The Legend of Zelda: Tears of the Kingdom, Twitch, Xenoblade Chronicles 2, Xenoblade Chronicles 3, Xenoblade Chronicles: Definitive Edition, YouTube