Vasyl Lomachenko - won WBO international featherweight title in 1st pro fight, wins WBO Featherweight Title in 3rd fight, less than a year into career.

Leon Spinks - beats Muhammad Ali and becomes undisputed HW champ after 8 fights and one year into his pro career.

Mike Tyson - undisputed world champ a year and a half into his pro career.

Ray Leonard - WBC WW Champ a little over 2 years into his career.

Oscar De La Hoya - WBO Super Featherweight champ after 12 fights - less than a year and a half into his pro career.

Theme here (with the exception of Mike Tyson)... strong amateur background + Olympic Gold