Metroid Prime 4 if it ever release, also Zelda sequel Tears of the Kingdom.
Also Pikmin 4 is releasing next year, Hopefully it'll sell 8 million wishful thinking TeeHee
I would like to think that, if Luigi's Mansion 3 can sell 10m+, Pikmin 4 on Switch can manage 8m with a lot of advertising, but I'm not sure. I do think it'll become the best selling Pikmin title, almost certainly.
There is also a lot of talk about a new DK game too, which Nintendo did make a point to promote him a bit during the Mario movie Direct (plus, there's the theme park DK addition). And speaking of the Mario movie, I'd bet that something "Mario" will release next year as well.
Definitely expecting another healthy year of Switch sales in 2023; well over 15m shipped, and that's without a new redesign of the Switch coming out.