James Figg - First Boxing Amphitheater
Jack Broughton - Established Rules
Jem Mace - First Universally Recognised Champ
Marquis of Queensbury - Established Modern Rules
Richard K Fox - Police Gazette - Precursor to Fleischer & Ring Magazine reporting on boxing
Terry McGovern - Innovative style in Old Timers era
Tex Rickard / Mike Jacobs - Promoter of Big Boxing events - - MSG Honcho
Nat Fleischer - Ring Magazine establishing ranking & belts for all weight divison
Frankie Carbo - IBC Honcho who controlled much of boxing
Jose Sulaiman - WBC Honcho who changed some rules

Sorry that's 11 but couldn't separate Jacobs & Rickard as they were intertwined.