Hi there! This is grag. I'm going to talk a bit about classes and how "branches" of a class works.
all classes are divided into two (or more) branches. the branches represent a speciality in that class. For example, the warrior is divided into the knight (a sword-and-board protector of the party) and the fighter (an in-your-face diehard that dishes out pain). Here's a link to all the classes and their branches. you may notice that some branches were originally full classes. this is just because they were similar enough to fit under the same archetype. for example, necromancer was too specific, but it worked great as part of the deathdude.
all classes are divided into two (or more) branches. the branches represent a speciality in that class. For example, the warrior is divided into the knight (a sword-and-board protector of the party) and the fighter (an in-your-face diehard that dishes out pain). Here's a link to all the classes and their branches. you may notice that some branches were originally full classes. this is just because they were similar enough to fit under the same archetype. for example, necromancer was too specific, but it worked great as part of the deathdude.