Archangels

Archangels are angels created directly by God. There are other angels, but they suck. Archangels can fly, and do other neat things, like superheroes with wings.

Fallen Angels

Fallen angels are archs who decided that God sucks and they want to live their own lives, like emo teenagers running away from home with daddy's credit card.

Edenites

Children of Adam and Eve: they're mostly inbred, but sacred and holy and of the utmost importance to the fallen and archs alike.