Reputation system (Patreon)

In the next update, Axel will join a guild. What should the adventurer levels be called?

A:--- E rank/D rank/C rank/B rank/A rank/S rank

B:---Copper rank/Iron rank/Silver rank/Gold rank/Platinum rank/Diamond rank

C:---Newbie rank/Advanced rank/Mid-rank/Veteran rank/Top class rank/Hero rank

But if you have a good idea, write it down