Admirals all rely a lot on their DFs i dont think any of them will have coc
That isn't much of an argue, Luffy's DF also carries him by a lot, and he got all the hakis. Blackbeard is obviously having CoC, and he still relies a lot on his DFs
Akainu seems to have pretty much established ambitions, hes a Fleet Admiral like Sengoku was (and he had CoC) and hes completely tied to Luffy's career as a pirate, meaning hes going to be one of the main antagonists, so theres is a high chance he gets CoC only for character writing purposes, not necessarily strength (since they will all rely a lot on their DFs anyway)