This page will talk about -light beings- and what they are:

Light beings are just that light beings, not to be confused with celestials. Light beings are Light Angels (yes, there are dark non fallen angels) Light keres, light Fae, Light elven and any other being that holds their elemental affinity to light. Though the difference with angel's light from the others is that angel's (mainly non fallen and a few fallen) have is grace that distinguishes their light from the rest.