Stop depending on the Vivre Cards and ignore what happened in the manga. I know Zoro fans are annoying but Zoro is actually a pretty cool character himself.
No one can deny two things even if you were a Sanji fan; Zoro is above Sanji currently due to the huge difference in AP and the second thing is that Zoro has both the basic and advanced forms of CoC.
Now why did the VCs stated only CoO and CoA? Because Zoro is still unaware that he has CoC and is only using it subconsciously from the muscle memory of the King fight. Also he uses it as Asura since Ennies Lobby.
I think that Oda is planning to have Zoro be aware of and uses it willingly on Elbaf where he will split the sky with a top tier similar to Luffy
No one can deny two things even if you were a Sanji fan; Zoro is above Sanji currently due to the huge difference in AP and the second thing is that Zoro has both the basic and advanced forms of CoC.
Now why did the VCs stated only CoO and CoA? Because Zoro is still unaware that he has CoC and is only using it subconsciously from the muscle memory of the King fight. Also he uses it as Asura since Ennies Lobby.
I think that Oda is planning to have Zoro be aware of and uses it willingly on Elbaf where he will split the sky with a top tier similar to Luffy
The manga showed us Zoro has CoC/ACoC. Zoro acknowledged during his battle with King he has CoC and he knocked out Beast Pirates fodders with his haki
Knocking out people with haki is the main way to tell if someone has CoC haki.
During his battle against King, Zoro improvrd his CoC haki skills and learned how to freely use CoC/ACoC.
Zoro learned how to add to his overwhelming CoA haki.
Zoro learned how to use ACoC without needing to use overwhelming CoA haki and he can use it without needed to use ACoC haki with enma at the same time.
Zoro improved his ACoC output and can use overwhelming ACoC haki.
The reason Oda hasn't listed Zoro as an official CoC user is because the world doesn't know he has it.
Being a CoC user is a big deal and not every CoC users can coated attacks with CoC. Only a few of the strongest can. The Straw Hats having 2 CoC/ACoC users is an even bigger deal and makes them a bigger thread to the world government.
Oda is waiting for the right moment to reveal Zoro's CoC/ACoC powers to the world. It will shock the world. That time is coming soon and it will be like rooftop 2.0. Unlike Luffy and Sanji, Zoro hasn't used his new powers (KoH) on Egghead Island. When Zoro uses that power is when the world will know he's a CoC user. KoH Zoro vs Nusjuro is coming soon.