Migos -- When It Comes to Dabbin' ... Hillary and Bill Gates Take the Cake (VIDEO)

Migos, the rap group at the center of the "dab" movement, just crowned a few unlikely winners for their favorite dabbers.

Our photog caught up with the rappers outside Fox Studios in NYC yesterday, so we asked them: who's the best dabber out there?

The dabbin' pioneers gave props to a couple unlikely candidates ... check out the clip.