Generally speaking you see homis with 2 basic skills. And 1 added because it's easy to do. These are any melee line (although the 2 handed are favourite), healing obviously. Just because it's a lifesaver. And the 'optional' one is elemental, altho this one gets switched around with melee alot.
Besides the fighting most homins specialize in some form of digging, for easy dappers (read: money, cast, the stuff you spend to get shineys) and because they dig, one or two forms of crafting. I'm still not sure which of the 2 (foraging or crafting) has the most value potential. Materials you can sell easier then crafted products, but crafted things are just more useful.
Anyway to make a point:
"Class" definitions--
Tank = anyone using a weapon and wearing heavy armour. (staffs, amps and knifes don't count)
Healer = anyone in light armour and casting heals. Note that Healers can easily double as Mages/Elementalists, and the other way around.
Mage = anyone in light armour throwing random spells
Elementalist (Elem) = anyone in light armour throwing fireballs! Or other damage spells

Forage = mud digger
Crafter = maker of shiney goodies
Your "class" changes with your occupation.