Katie Taylor was always the most curious kind of amateur. Go back just over a decade to May, 2016, and that became clear. She was then the reigning Olympic, world and European amateur lightweight champion, but her company, KT Sports Limited, reported accumulated profits of €1.2 million that month. An American survey the previous November had Taylor at number 10 in the top 10 list of richest women boxers of all time. The nine fighters above her were all professionals, most long since retired. Blue chip sponsors flocked to Taylor in her amateur days – Toyota, Sky Sports, Bank of…