My opinion is the Warlocks such out knowledge and such for the sake of knowledge or advancing their cause, maybe at the expense of something or someone else. Like Jedi or Indiana Jones. Scholar adventures. Hunters I think are more in it for the money. Like a Han Solo or Boba Fett. In it for the money or some personal gain. Titans are more of the patriots. They would be more of a Captain America. Volunteering their lives in the defense of humanity as a whole. Just my opinion though.