List of candidate who can beat king
Mid diff
Kaidou, luffy, shanks, mihawk, bigmom, blackbeard, akainu, kizaru, ryokugyu, fujitora, aokiji
High diff
Zoro,ben beckmann(can be in midd diff list), law
, shiruyu, rayleigh(due to age)
Can go toe to toe fight can go either way
Sanji, katakuri, luckyroo, kidd