By one side it's nice she got in, by another side even Shovel Knight got to be an assist. I guess it because on the early days of the Switch it was one of the 1st popular 3rd party games and because of that, it sold a lot.

I believe if you are a character of a big Japanese game you can get in Smash so I'm surprised 2B didn't get in but maybe they had the deal with Soul Calibur going already.