So since big mum is gone its time to theorise things. So there a lot of candidates for this but personally id say buggy. This would be possible because of the fact that buggy has a lot of influence, with the impel down prisoners etc. also him being a former warlord of the sea is also a good thing. he has multiple titles below him being that he is a former roger pirate crew and warlord of the sea. he would also be considered a brother to shanks which made him a warlord in the first place. Another candidate would be either Eustass or Law. personally id say Law cuz im very biased towards him and he is one of the people who defeated big mum. He also has a higher bounty than eustass by 20M. Eustass because of the fact that he is dangerous. he was given his bounty pre timeskip of 315M ( i think) for endangering citizens. but lastly and most obviously luffy. Luffy (being named the 5th yonko) would obv be a yonko after big mums defeat but after the events of chapter 1043, it could leave 2 spots for yonkos. which i think would be out of these canidates.

What would you think??