Updated through the end of Mar. 31, 2022.
Predictably, Arceus joins the ranks. Not a whole lot of other changes, though ACNH inches closer to passing Super Mario Bros. SSBU & BOTW continue their march to 30m and Super Mario Party continues towards 20m. Bowser's Fury should join the ranks later this year. I imagine that Switch Sports and Forgotten Land could join 10m as well too. Obviously SV will do it pretty easily. Also, Mario Party Superstars should join 10m before long as well!
I agree with everything except Forgotten Land, I think it can do 5+ million but 10m is too much.
When the herd loses its way, the shepard must kill the bull that leads them astray.