[quote=@Etcetera]
<Snipped quote by DarkwolfX37>

What are the various species? And what are recognition techniques?
[/quote]

Well, a species is technically a misnomer, but it fits well. Examples would be valkyries, wheels, powers, archangels, anitu, furies, tennin, etcetera.  And recognition techniques range from rituals to simple spells to natural transmutational items that react to a specific type of supernatural power.