[Physical Stat]
Rank F - Kids
Rank E - Adult
Rank D - Seaman Recruit
Rank C - Seaman Apprentice
Rank B - Seaman First Class
Rank B+ - Petty Officer
Rank A- - Chief Petty Officer
Rank A - Master Chief Petty Officer
Rank A+ - Warrant Officer
Rank S- - Ensign
Rank S - Ensign
Rank S+ - Ensign
Rank SS- - Lieutenant Junior Grade
Rank SS - Lieutenant
Rank SS+ - Lieutenant Commander
Rank SSS- - Commander
Rank SSS - Commander
Rank SSS+ - Commander
Rank SR - Marine Captain
Rank SR+ - Marine Captain
Rank SSR - Marine Captain
Rank SSR+ - Marine Captain
Rank UR - Commodore
Rank UR+ - Commodore
Rank LR - Commodore
Rank LR+ - Rear Admiral
Rank MR - Rear Admiral
Rank MR+ - Rear Admiral
Rank X - Vice Admiral
Rank XX - Vice Admiral
Rank XXX - Vice Admiral
Rank EX - Admiral
Rank DX - Admiral
Rank CX - Fleet Admiral/Yonko
Rank BX - Yonko
Rank AX - Pirate King
Rank SX - Legend
[intelligent Stat]
Rank F - Kids
Rank E - Teenager
Rank D - Below Average
Rank C - Average
Rank B - Above Average
Rank A - Gifted
Rank A+ - Highly Intelligent
Rank S - Genius
Rank S+ - Genius
Rank SS - Genius
[Potential]
The stages of potential: Initial → Awakened → Ascended → Mastery
G - Adults, Weak four sea pirates
F - Four sea pirates, Ensign
E - Lieutenant, Grand line pirates
D - Captain, New world pirates
C - Commodore, Supernova
B - Rear admiral
A - Vice-admiral ( Smoothie, Cracker, Doflamingo, Jinbei, Perespero, Jack, Katakuri, Queen, King, Weevil )
S - Admiral ( Bullet, Aokiji, Kizaru, Blackbeard, Old Rayleigh, Fujitora, Ryokugyu, Mihawk, Oden, Marco )
SS - Yonko ( Prime Sengoku, Akainu, Old Whitebeard, Shanks, Big Mom, Kaido, Dragon, Old Garp )
SSS - Beyond Yonko ( Prime Whitebeard, Prime Garp, Prime Roger, Rocks D Xebec )
All ranks are further divided into three parts like
A-
A
A+