Bruh did you even hugging play New Super Mario Bros U or New Super Luigi U? Those are legit two of the best 2D Mario games since Super Mario World, especially Luigi U, that's a goddamn challenge of a game, it's not the game designers fault Nintendo continues to mandate that stale art style for these games.
And Super Mario 3D World is the GOAT because it has playable Luigi, Toad, Peach, and hugging Rosalina. (Also cat Peach and cat Rosalina >>>>>>>>)
And you're forgetting stuff like Pikmin 3, the NES Remix Pack, Yoshi's Woolly World, Lego City Undercover, DKC: Tropical Freeze, Kirby and the Rainbow Curse, etc.
And that's not even getting into some great games/software on the eshop like Pushmo World, Affordable Space Adventures, Fatal Frame: Maiden of Black Water, Dr. Luigi, Art Academy: Home Studio.
And those are just games off the top of my head, there were like 770 games released for the system, I'm certain there are numerous hidden gems in the platform's library, especially on the eShop.
hug didn't even get into the goddamn Virtual Console tbh.