Best gymnast per quad

Who would you consider the best gymnast of each quad. Here would be my choices.

1969-1972- Kato, Janz
1973-1976- Andrianov, Commaneci
1977-1980- Dityatin, Commaneci (nobody is really a solid choice though)
1981-1984- Bilozertchev, Yurchenko
1985-1988- Bilozertchev, Shushunova
1989-1992- Gutsu (nobody is really a solid choice, Boginskaya is the only other decent option), Scherbo
1993-1996- Podkopayeva, Scherbo
1997-2000- Khorkina, Nemov
2001-2004- Khorkina, Paul Hamm (gags)
2005-2008- Liukin, Yang Wei
2009-2012- Mustafina, Uchimura
2013-2016- Biles, Uchimura

Best gymnast per quad