The vast majority of Eboigbe's losses came against unbeaten prospects and only 3 of the guys who beat him weren't unbeaten albeit 3 were making their pro debuts In fact, he went 1-13 in his first 14 fights and all his opponents up until then were unbeaten He has a KO 100% and is the only man in the history of the sport to stop the opponents he did beat Future champ
Some of these journeymen were really good amateurs, but they couldn't get anywhere in the pros due to lack of support, so they figured out they could earn a decent living this way instead.
Propa boxing has a video on a journeyman that felt quite respectful and I enjoyed that very much. As a recommendation.