Everyone starts out as a survivor of the Book of Revelations biblical apocalypse-- one of the Meek. The Meek is the base character class. As characters grow into the post-apocalypse world, they may take Reborn (prestige) classes such as Digger (Scavenger), Thug, Shaman, Physician, Anarchist, Preacher, Restorer, Scientist or continue to progress as one of the Meek.
There are not currently rules for PC Angels, but you could cetainly do easily enough.
Yes, there are two types of Magic so far- Shamanistic and Word of God Magic. The classic Black/White magic has fallen away...