You have an archetype - your base character (that is fixed permanently), and then you can choose whatever clothes from your archetype that you want, or whatever clothes you want from other archetypes. The archetypes themselves are named (and the clothes that they wear are named after them)
I don't believe this is quite right. Now of course I could be wrong, but I believe the archetypes are just the names of the outfits and you can mix and match the pieces from all the outfits. So the archetype doesn't really have any meaning past what it looks like and doesn't have any permanent or substantial effect on your character other than appearance as any clothing does.