I see
And yup that sounds perfect.
I think just calling them A,B,C sounds...slightly weird.
Type A: special consumption [Since its special to one's biological structure. ]
Type B: Omnivorous consumption [Since they can eat anything to relinquish thier hunger, boost their physical attributes and boost their stamina]
Type C: Rare consumptio.
The names doesn't Mean much.
For A I think Godzilla could fit too [Since he get energy from a special element , radiation, it also boosts his power so it works well.]
For B: I think luffy? [He can heal from eating any type food so it could work?]
For C: maybe rimuru could work too? Dragon slayers work too [They can eat magic get magical attributes, like when natsu ate lighting and got the ability to manipulate lightning, but I could be wrong. They also work for type A, since they get stronger after eating a special electric, magic]