I’m not sure that’s it. This was mostly really complex and fast but very fluid moves, with the legs; not so much with the upper body.
Sometimes the dancer even looks like they’re tilting so much they’re going to tip over, due to the leg movement.
” This was mostly really complex and fast but very fluid moves, with the legs; not so much with the upper body.”
Sure sounds like Shuffledancing.
https://www.youtube.com/watch?v=FuiMQPc5aKA&pp=ygUPU2h1ZmZsZSBkYW5jaW5n