EDIT: Release 2.3 is OUT! (April 2020)
https://github.com/lantus/mame-nx/releases/tag/2.3
I've ported MAME 0.72 over to the Switch. This is a port of my Xbox 360 0.72 Port. The main intent is to play the Midway games at full speed with sound/music (ie MK3, UMK3, NBA Hangtime etc). Of course...