"Jon Jones who? Cormier who? Conor McGregor who?" ... Henry Cejudo tells TMZ Sports he's the "greatest combat athlete of all-time."
Yes, you heard right ... Henry says he's the best ever.
The UFC's Flyweight champ (125 lbs.) came through the TMZ office days before his UFC 238 fight against Marlon Moraes -- where Cejudo's fighting for the Bantamweight title (135 lbs.) -- and entry into the exclusive champ-champ club.
For Cejudo ... it comes down to personal accomplishments -- and he believes there ain't a man or woman on Earth with a better resume.