I haven't kept up with Nintendo in almost a decade. Have they made literally anything good since like BOTW? Used to be a massive Nintendo kid, to the point of being one of the 5 people to have a Wii U and the only person in existence to own Super Luigi U. Feel a little sad that I don't know what this company is doing these days and maybe want to see if they have made anything that is worth buying.
It really depends on what you're into. Only going to talk about things I've played here, and the only Nintendo series I'm really into are Mario and Zelda.
A lot of people like Super Mario Odyssey. I'm not a huge fan, but if you liked a lot of the 3D platformers for N64 like Banjo Kazooie and Donkey Kong 64, I think you'd really like it. It's very much in the style of a semi-open world N64 Rare collectathon.
If you haven't played it, Mario Kart 8 Deluxe has probably grown into legitimately the best Mario Kart they've ever made with something retarded like 96 tracks. If you already played it for Wii U, I don't know if it's worth the full price for switch. It's the same game with more tracks, characters and an unfucked battle mode.
They rereleased 3D World and it has this little open-world 3D Mario game included called Bowser's Fury. It's a combination of the controls and power ups from 3D Land/World, with the mission style collect-the-stars gameplay from Mario 64 and a small open world in the style of BOTW. I think Bowser's Fury is the best Mario game since the Wii era and one of the best games on the Switch. It's kind of crazy it was buried in a bundle with a 3D World port.
Tears of the Kingdom is basically BOTW 1.5. If you like BOTW it's more of the same, but at $70 USD it's more expensive than a regular Switch game. Is it worth it? It really depends on how much you like the BOTW style gameplay. If you're one of those people who can play BOTW over and over, or if you remember BOTW fondly and haven't played it in a long time, you'd probably really like TOTK.
Super Mario Bros Wonder is a pretty good 2d Mario game, but it's a bit on the easy side. The art direction and level design are really good. Again, they tried to do the open thing where you can play most of the worlds in any order.
Zelda Echoes of Wisdom is their attempt at an openish world 2D Zelda where you control Zelda and you use clones of enemies and objects in the world to solve puzzles. It's OK. Solid 7/10 title, nothing more, nothing less.
Mario Kart World for Switch 2 is an OK game. It has worse courses than 8, but better controls and graphics. It has this big open world, and all the tracks are connected by little side roads, so your milage will vary depending on how much you like open world shit. It's also an expensive game on a console that costs too much. I just replaced my fridge and it costed less than I paid for a Switch 2 with Mario Kart.
TLDR Nintendo is currently in their open-world era where they are trying to make everything kind of like BOTW. Results have varied.