Akainu should have it.
Aokiji has fought on par with him for 10 days, so I find very difficult to believe that Aokiji didn't have it.
Fuji, given his actions and characteristics, is another likely CoC user. Even Yamato has it, ad Katakuri and Chinajo have the CoC but not the coating, so Fuji is more than qualified.
I don't know about the others.