Holyfield turned it into a roll out of arm punches, I think it’s Louis and Tyson based on efficiency and effect but obviously Holy was mean with it.
I think if you’re asking it’d be between Tyson and Louis, Tyson certainly did things we never saw Louis do he was like a giant bantam.
I’m gonna roll different on this one…no I’m not. Louis 100%. I know. Bloody boring, but….. Technique, speed, accuracy and power, punches fired in perfect complement to head and body. 10/10. Nothing more to ask for. At his absolute peak, Ali could put his punches together in stunning, warp speed fashion. See both Williams and Terrell fights for perhaps the best examples - but Ali also laid some fantastic combos on Liston in ‘64.