illusion magic, some telepathy, some clairvoyance, some polymorphism, some alchemy, some shamanism. poor mans sorcerer, jack of all trades.>wizard
use of fetishes, wands, totems, tomes. shaman skills, some elemental, ritual magic.>sorcerer
alchemists, elementalists, divination, "blood magic", greater polymorphism, greater ritualism. more raw strength than a magician. able to do naturally what a wizard needs preptime for.>magus
best combination of wizard and sorcerer. natural talent of sorcerer combined with learning and paraphernalia of wizard. disdainful of magicians, shamans, witches. god tier summoners.
Constantine is most definitely a magician, but a powerful one. I believe he's actually referred to as 'the laughing magician' a couple times. If you were to stat him in an RPG his luck would be 10/10. fights above his weight class all the time and pisses other users off.