try update __odm_fields__ from a second parent class ...

[Barceloch]

waiting model inherance... :)

[art049]

Actually model inheritance is not supported yet.
It should work like this though:

from odmantic import Model

class ContactModel(baseModel):
    class Config:
        collection = "__Contacts"    # <---------------*it this will be a dynamic custom name  for all my models*

    fullname: str
    phone: str
    email: str