JCC, McCallum, Joe Louis, Freddie Steele, Carlos Monzon, Alexis Arguello, Donald Curry, Holyfield, Trinidad, B-hop amongst many well schooled fundamentalist styles
When you think about, Larry Holmes technique and fighting style was just about as ‘basic’ as it’s gets. Controlling the pattern of a fight with a fast accurate jab, backed up with a heavy right cross and a occasional surprising right uppercut. Wasn’t particularly fond of inside body work or left hooking off the jab. Had strong legs and though not as fast or as nimble as Ali on his feet, was able to move quick enough out of range when needed. So in summary, you could so that Larry’s style was pretty basic and straightforward but he just did it so much better than his contemporaries that he was able to achieve recognition as one of the finest heavyweight ever.
Eder Jofre Jose Napoles Harold Johnson Juan Manuel Marquez Ricardo Lopez Alexis Arguello Carlos Ortiz George Benton Gilberto Roman Those are the ones that come to mind that seem to do most things technically sound in terms of pure technique and skill. Ortiz may look a little out of place because he wasn’t as explosive as the others but he was complete and made very few technical or tactical mistakes.
I'm gonna say Rigo. And that's probably what did him in against Loma, that he was unable to comprehend his unorthadox style.
Juan Manuel Marquez exhibited every facet of fundamental excellence in the course of his career. Might review him soon, see if he ever put it all together. He was so strategically well developed that he was able to do with some ranges, even really unexpectedly, like Diaz I. I don't want to get into another argument about this, but some people seem to be selecting fighters that are superb out-boxers but lack in-fighting skill. Not a fundamental boxer.
Here's an interesting thing about Harold Johnson; he reached a fair bit at HW, just the physical limitations of his reach. It's interesting, because he is indeed a great example of a great fundamental boxer but he's one who, on much of the readily available footage, committed a cardinal fundamental sin, upsetting his balance to try to land a punch his opponent wasn't necessarily on the end of. But what else could he do? Not throw? Of course not. It's a conundrum.