20% of switch-exclusive games or 20% of complete switch library? I suspect cross-platform releases aren't in high priority.
Mario Kart: "Okay"
Animal Crossing: "Great"
Super Smash Bros: "Okay"
Breath of the Wild: "Great"
Pokemon Sword and Shield: "Okay"
Super Mario Odyssey: "Great"
Pokemon Scarlet and Violet: No support
Super Mario Part: "Okay"
Super Mario Bros U: "Okay"
Ring Fit Adventure: No support