Nellie Kim (SOV)
Shigeru Kasamatsu (JPN) (Man)
Mitsuo Tsukahara (JPN) (Man)
The Tsukahara with full twist is among the myriad skills that Nellie Kim has compulsively named after herself, but the number of people in the history of time who call it “the Kim” is zero.
The actual question arises as to whether you refer to this vault as a Tsuk full or a Kasamatsu. A Tsuk full and a Kasamatsu are essentially the same vault (the same entry, the same amount of twisting), but the precise, technical difference between the two terms concerns the direction of twisting. It’s explained in detail here. This is important in the men’s code, where a Tsuk full and a Kasamatsu are specifically different vaults. In the women’s code, the two are not differentiated, so the difference is not significant. Because everyone these days performs the vault with the Kasamatsu technique, the two terms are used interchangeably in women’s gymnastics.