Supernatural is the only real option in D&D. It may be anchored in "mundane," but magic is a part of a D&D character's life from birth to death (and then after death, too!). You slay giants, you slay dragons, you fight fiends, you survive explosions and cave-ins and poison gas and deadly falls, a night's rest restores you, you are not a "mundane" person.
That supernatural might look like intense training, or magic items, or being born of the gods, or whatever, but at the end of the day, even a level 1 fighter is head and shoulders above your average town guard or militia member, and that's the same kind of magic that helps dragons fly and giants breathe. You're magical.
There might be a filter or a style of D&D that's not so magical, but out of the box, with sorcerers and warlocks and wizards and clerics and druids, D&D heroes are magical, and fighters and rogues aren't exceptions to that if they're playing in the same genre.