Though the division commanders all made their appearance in the series, only half of them were directly named in the main storyline. The rest were named in the SBS of Volume 58.
D: “Could you please tell me the names and squad numbers of all of Whitebeard’s fleet commanders?”
Oda: “…there’s no need to remember anything that I supplement in an SBS. The information that I don’t include in the main series are the parts that I decided would just confuse readers, so please just enjoy the SBS as a bonus. Anyway, here are the Fleet Commanders of the Whitebeard Pirates.”
Division Commander #01: Marco the Phoenix
Division Commander #02: Fire Fist Portgas D. Ace (deceased)
Division Commander #03: Diamond Jozu
Division Commander #04: Thatch (deceased)
Division Commander #05: Flower Sword Vista
Division Commander #06: Blamenco
Division Commander #07: Rakuyo
Division Commander #08: Namur
Division Commander #09: Blenheim
Division Commander #10: Curiel
Division Commander #11: Kingdew
Division Commander #12: Haruta
Division Commander #13: Water Buffalo Atmos
Division Commander #14: Speed Jiru
Division Commander #15: Fossa
Division Commander #16: Izo