Here’s mine :
- S tier : Akainu, Aokiji, Big Mom, Blackbeard, Dragon, Fujitora, Garp, Kaido, Kizaru, Mihawk, Oden, Rayleigh, Roger, Rox, Ryokugyu, Ryuma, Sengoku, Shanks, Shiki, Whitebeard
- A tier : Ashura Douji, Ben Beckman, Cracker, Doflamingo, Hancock, Inuarashi, Ivankov, Jack, Jinbe, Jozu, Katakuri, King, Lucky Roo, Luffy, Magellan, Marco, Nekomamushi, Queen, Sabo, Smoothie, Vista, Weevil, Yasopp
- B tier : Ace, Apoo, Black Maria, Bonney, Burgess, Capone, Crocodile, Daifuku, Denjiro, Diamante, Drake, Enel, Hawkins, Ichiji, Kawamatsu, Kid, Killer, Kuma, Kyros, Law, Lucci, Niji, Oven, Page One, Pedro, Pekoms, Perospero, Pica, Sanji, Sasaki, Sentomaru, Smoker, Snack, Tamago, Trebol, Ulti, Urouge, Vergo, Who's Who, Zoro
- C tier : Bartolomeo, Bellamy, Bepo, Brook, Caesar Clown, Caribou, Carrot, Cavendish, Chinjao, Dellinger, Franky, Gladius, Hody, Judge, Kanjuro, Kikunojo, Kinemon, Koby, Lao G, Moria, Reiju, Robin, Sai, Senor Pink, Shinobu, Yonji
- D tier : Alvida, Baby 5, Buffalo, Blue Gilly, Buggy, Brûlée, Chopper, Dagama, Elizabello, Hajrudin, Ideo, Leo, Machvise, Mister 3, Monet, Nami, Orlumbus, Perona, Rebecca, Suleiman, Tashigi, Usopp,, Viola, Wapol
- E tier : Giolla, Mansherry, Momonosuke, O-Tama, Pudding, Raizo, Sugar
Obviously, characters that are in the same tier aren't necessarily equal nor particularly close in strength but there's not a massive difference in strength between them.
- S tier : Akainu, Aokiji, Big Mom, Blackbeard, Dragon, Fujitora, Garp, Kaido, Kizaru, Mihawk, Oden, Rayleigh, Roger, Rox, Ryokugyu, Ryuma, Sengoku, Shanks, Shiki, Whitebeard
- A tier : Ashura Douji, Ben Beckman, Cracker, Doflamingo, Hancock, Inuarashi, Ivankov, Jack, Jinbe, Jozu, Katakuri, King, Lucky Roo, Luffy, Magellan, Marco, Nekomamushi, Queen, Sabo, Smoothie, Vista, Weevil, Yasopp
- B tier : Ace, Apoo, Black Maria, Bonney, Burgess, Capone, Crocodile, Daifuku, Denjiro, Diamante, Drake, Enel, Hawkins, Ichiji, Kawamatsu, Kid, Killer, Kuma, Kyros, Law, Lucci, Niji, Oven, Page One, Pedro, Pekoms, Perospero, Pica, Sanji, Sasaki, Sentomaru, Smoker, Snack, Tamago, Trebol, Ulti, Urouge, Vergo, Who's Who, Zoro
- C tier : Bartolomeo, Bellamy, Bepo, Brook, Caesar Clown, Caribou, Carrot, Cavendish, Chinjao, Dellinger, Franky, Gladius, Hody, Judge, Kanjuro, Kikunojo, Kinemon, Koby, Lao G, Moria, Reiju, Robin, Sai, Senor Pink, Shinobu, Yonji
- D tier : Alvida, Baby 5, Buffalo, Blue Gilly, Buggy, Brûlée, Chopper, Dagama, Elizabello, Hajrudin, Ideo, Leo, Machvise, Mister 3, Monet, Nami, Orlumbus, Perona, Rebecca, Suleiman, Tashigi, Usopp,, Viola, Wapol
- E tier : Giolla, Mansherry, Momonosuke, O-Tama, Pudding, Raizo, Sugar
Obviously, characters that are in the same tier aren't necessarily equal nor particularly close in strength but there's not a massive difference in strength between them.