He's a great fighter!
There's a few reasons he's overlooked.
-His look, he looks a lot older and doesn't have an imposing figure.
-Doesn't have a lot of charisma to be a star, so the normal fans don't know much about him.
-Most importantly, pretty bad losses. He's been finished in all 4 of them.
The first loss was against against Ramsey Nijem(10-9 record) who was a mid-tier fighter, Beneil was winning until he got caught and TKO'd.
The second loss was against Chiesa, which isn't bad since he's a pretty good fighter.
The third was a brutal KO by Barboza in a competitive fight. That lauched him in a pretty bad 3 fight skid(one was a draw against Dunham).
The fourth loss was a 1st round KO of Hernandez who's an ok prospect, but hasn't shown that he's championship caliber. At the time it was Hernandez's debut, he was unranked and pretty unknown to most. This loss sent Beneil out of the rankings.
3 fight skid:
I think he's great and has shown he's pretty elite at times, he just made some bad decisions in certain fights.
He has another oppurtunity to shine against Islam.