I don't really see Aramaki having it after it was shown he views being capable of gaining followers as remarkable along with his reaction to Conqueror's haki but I do think Akainu, Aokiji and Fujitora have it.
Akainu, Aokiji and Fujitora all have very strong convictions with Akainu and Aokiji literally fighting for 10 days over theirs with Aokiji being unwilling to even work under Akainu afterwards. Akainu and Aokiji have clearly influenced quite a lot of their fellow Marines seeing as Akainu even has the admiration of Aramaki and Smoker looked up to Aokiji so much.
I haven't seen anything from Kizaru to suggest he has it though Oda could probably do more with him. Sengoku was confirmed to have it, kinda opening the way for Marines to have it and I think Garp having it is very likely.
Monkey D. Dragon, Blackbeard and Mihawk will all showcase it in my opinion. Rocks D. Xebex definitely had it, the guy had so many notable conquerors under him. Im probably has it. Shiki having it would be reasonable but I'm not sure if he'll ever appear to showcase it.
Coby and Sabo will probably display it. Maybe Sanji, Usopp and Jimbei but at the same time, none of them could have it and it would still work fine to be honest. Beckmann probably has it, maybe Shiryu as well.
I'm only looking at regular Conqueror's haki, not the ability to imbue it into attacks. With that, I expect even fewer to have that.