Ali, Foreman, Frazier, Gatti, Holy, LaMotta, Fury, C. Sanders, V. Klitschko, Lyle, McClellan, Chuvalo and many others
Old timer Joe Grim comes to mind. That he was even allowed to fight is hard to believe. His record reads like a Who's Who of great fighters of the early 20th century. A comparitively small man, he fought the likes of Fitz, Jack Johnson and nearly every top heavyweight and light-heavy of his era. His claim to fame was that almost nobody could knock him out, though they all tried. He was floored multiple times in most of his fights, which he lost handily but he would defiantly state after each fight "I'm Joe Grim and I fear no man!" Luther McCarty was one of few who actually did stop him. Today he doubtless would be denied a license and not surprisingly he died in a sanitarium in 1937.
Naoto Takahashi, since no one else will mention him. The man had so much heart and determination it left him with a brain haemorrhage and brain damage. He was in some of the bravest performances ever fought in a Boxing ring, such as the first war with Noree Jockygym and the absolute war with Mark Horikoshi. His nickname was literally 'Prince of the Reversal'. He was a national level fighter only, but I will mention him and others like him any chance I can get. There are a lot of obscure and lower level names you could put in this thread more deserving than those already mentioned, especially in the British circuit. Check out this article to get an overview on his career and filmed fights if interested: https://www.asianboxing.info/thinki...k-back-on-japanese-action-man-naoto-takahashi
Chris Byrd. Undersized and underpowered blown up cruiser at best. Hung with most of the big names in the 90's/2000's heavyweight division and went into almost every fight knowing he was at a disadvantage.