The highest order, the six-winged ones, surround the throne of God, singing ceaselessly, Holy, Holy, Holy. They are angels of love, light, and fire.
CHERUBIM
The guardians of the fixed stars, keepers of celestial records, bestowers of knowledge. In the Talmud cherubim are equated with the order of wheels, also called ophanim. Chief rulers are Ophaniel, Rikbiel, Zophiel, and, before his fall, Satan.
THRONES
Bring God's justice to us. They are sometimes called wheels and in the Jewish Kabbalah, CHARIOTS or the MERKABAH. The occult book, the Zohar, ranks wheels above seraphim, but other sources place them as cherubim, the whole thing being confused. The ruling prince is Oriphiel or Zabkiel or Zaphiel.
DOMINIONS or DOMINATIONS
Regulate angelic duties. Through them is manifested the Majesty of God. They hold an orb or sceptre as an emblem of authority, and in Hebraic lore, the chief of this order is named Hashmal or Zadkiel.
VIRTUES
Work miracles on earth. They are bestowers of grace and valor.
POWERS
Stop the efforts of demons to overthrow the world, or ellse they preside over demons, or perhaps (according to St. Paul) they are themselves evil. Ertosi, Sammael, or Camael (depending on source) is chief of the Powers.
PRINCIPALITIES
Protectors of religion. Nisroc, in Milton, is "of principalities the prime," and others, according to various sources, are named Requel, Anael, and Cerviel.
ARCHANGELS and ANGELS
Guardians of people and all physical things.
The above information was obtained from Sophy Burnham's A Book of Angels.
Angel Room - Nine Orders of Angels: