Many have argued about who came first or who influenced who with Cwalk, krumping and the shuffle etc.
Shufflers aren't fussed about all that stuff really, it respects all dance, and happily acknowledges dance history. We're just glad to be a part of it. The term 'shuffle' actually relates to early tap dancing steps 100 years ago.
Here's a vid of some vintage 1930's tap/jazz dancers Al Minns & Leon James of the Savoy Ballroom in Harlem filmed during the 1950s demonstrating the Charleston, a dance popular in the 1920's and 30's.
They start with the basic Charleston steps then show a series of variations on the Charleston including the jitter bug etc. The variations themselves drawing on all sorts of traditional folk dance origins going back to before writing began.
See how many dance steps associated with the Shuffle, Cwalk, Krumping and even popping and locking (the freeze move) you can spot.
Original Charleston with Al Minns & Leon James
And here's a 1920's tutorial on how to do the Charleston - even on the roof of a moving car !!!
Charleston tutorial 1920's