Gainer layout 2/1 (double full)
Katarzyna Jurkowska-Kowalska (POL)
This skill was submitted a number of times by Katarzyna Jurkowska-Kowalska, but she finally got it named after herself at the 2018 world championships. And then promptly retired. Done and done.
When she first submitted the element, it was given a provisional value of G, but when she submitted it and subsequently got it named after herself, the value was only E, just one tenth higher than the version with a single twist. Because the WTC sure does hate these gainer dismounts.