Whether all the angels are of one hierarchy?

❌ Objection 1 : It would seem that all the angels belong to one hierarchy. For since the angels are supreme among creatures, it is evident that they are ordered for the best. But the best ordering of a multitude is for it to be governed by one authority, as the Philosopher shows (Metaph. xii, Did. xi, 10; Polit. iii, 4). Therefore as a hierarchy is nothing but a sacred principality, it seems that all the angels belong to one hierarchy.

❌ Objection 2 : Further, Dionysius says (Coel. Hier. iii) that "hierarchy is order, knowledge, and action." But all the angels agree in one order towards God, Whom they know, and by Whom in their actions they are ruled. Therefore all the angels belong to one hierarchy.

❌ Objection 3 : Further, the sacred principality called hierarchy is to be found among men and angels. But all men are of one hierarchy. Therefore likewise all the angels are of one hierarchy.