The NBA 2K18 Archetype has been expanded and will be deeper than it has ever been before. Possible additional archetypes that are unconfirmed, but have been in the rumor mill are:
Pass First Playmaker
Update: There are currently 189 Archetypes in 2K!
You pick a single archetype, and then you pick a second archetype, and your final archetype will be a combination of the Two!
Main Archetype: Sharpshooter
Second Archetype: Slasher
Final Archetype: Slashing Sharpshooter