either way if they have this ability why did they fear Luffy , Ace and Dragon so much? why was Shanks able to scare the shit of them and end the war . we saw many pirates use it, but no marines till now.
seeing how about every Admiral has a devastating DF makes me think they don't have CoC haki.
exception is Garp. Sengoku might have it as well but to honest maybe not a good one.
I can see Fujitora and Smoker have such ability since they are righteous and rebellious.