User blog comment:Epakrios/The 9 angelic orders/@comment-3045936-20130729222350/@comment-3045936-20130730191417

Now if it is in some canon source, that his (Dionysius the Areopagite)'s Angelic Order is proven as correct than we can use. But until then, it cannot be used, as one it's not an supernatural source, nor to my knowledge been named in the series or in a supernatural outside canon source.