Akumas were supposed to be Champions, but as all fans know, Hawkmoth screwed it up. Anyway, I made a list of names for Champions, whether a wielder, a former Akuma, a character who will be, or one who we don't know if they will get superpowers yet.
Marinette: Miss Miracle
Adrien: Infortunium (Latin for Unlucky)
Ms. Mendeleiev: Madame Force
Ms. Bustier: Lady Lecturer
Nathalie: Heartsome (if you don't understand, look up her last name and translate it)
Tom: Bake King
Sabine: Flour Power