Once the first group of Acolytes were finished with Librarian Gareth, they returned to Joseph and explained the situation to him in detail. All of them had managed to awaken the mage class, and while some had considered other options from the base classes, they had ultimately all chosen to go with the one they knew.
As with the Spellblades under Prince Corbin, they had to worry about messing up their future by picking a class that was incompatible with the Sect teachings.
Unlike the Golden Dragon Nation, there was really only one path for most of the other nations, and that was the path of the combat or research mages.
That was the only way that the humans could compete with the other species without technology, and the Golden Dragon Nation was the only one that had focused on technological development, thanks to their previous lack of mages.