Power level
Power levels
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G - normal civil, 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 )
Z - Imu
EX - WORLD LIMIT
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All ranks are further divided into three parts like
A- ( Smoothie, Cracker, Jack)
A ( Doamingo, Jinbei, Perespero, Katakuri, Queen )
A+ ( King, Weevil )
These are my rankings; please don't crucify me if you call BS on something. IF it is a glaring mistake then I will change it but for the most part, it SHOULD remain as is.
Weekly Power Status
-- Power
Ranking 
-- Power
stone