About COC part, i agree Sanji and zoro have the possibilty of having CoC. About the Ryou part, Ryou is basically the same thing as Armament, or did you mean Advanced Ryou? If yes, then it's really unlikely for Sanji having adv Ryou, story wise it's impossible for some reasons:
1. Oda told us Sanji specialized in Observation, so having adv ryou out of nowhere is not possible
2. Sanji only cooks, with Luffy and Zoro fight someone stronger than Sanji's Opponents, Growth Wise Sanji is getting far behind Luffy and Zoro as time goes, not to mention Zoro always trains relentlessly to catches up to luffy, on the other hand what has sanji done? he only cooks, so if Pre Wano luffy who had fought several yonko commanders level didnt know Adv ryou yet, Wano Sanji too logically dont know Adv ryou yet. On the other hand, Zoro is still possible of having adv ryou since Oda told us he specialized in Armament
and the monster trio part, logically Sanji is the 4th strongest now after luffy, zoro, and jinbe. Jinbe is definitely a YC level based off feats and portrayal, and zoro is stronger than Jinbe acording to databooks. Databook vivrecard volume 1 tells us that zoro is the second strongest after luffy, and as you know Databook vivrecard vol 1 came out during the beginning of Wano arc. And according to databook vivrecard vol 4, Jinbe officially joined the strawhats in WCI, meaning, according to databook vivrecard vol 1 and 4, Wano zoro is stronger than Wano Jinbei. Ofc Sanji has raid suit which could possibly put him stronger than Jinbe, but he's lacking of feats, so until Sanji performs some incredible feats, the ranking of strawhats currently is :
Luffy > Zoro > Jinbe > Sanji > others