Updated through Dec 31, 2022!
ACNH has surpassed Super Mario Bros. and now the top 3 in 2/3 Switch! SSBU has moved into the Top 10, with BOTW not far behind. SV start off tied with Mario World. Splatoon 3 & Bowser's Fury were also added to the list, giving us 57 Nintendo games that have exceed 10 million sales!
Switch Sports & Mario Party Superstars will probably be added this year and obviously TOTK will be there very quickly. By the end of the year, we should have at least 60 Nintendo games exceed 10 million sales.
Arceus is just over 100,000 units away from being the highest selling single version Pokemon game (surpassing Yellow). Doesn't look like BDSP will pass DP and I doubt LGPE will either. Both should maybe pass BW though. I think Arceus might pass BDSP & LGPE as well.
Of the 57 games, 17 are on Switch. Switch has almost as many 10 million sellers as DS & Wii combined. By the end of this year, it should exceed them with at least 20.