Clan Heaven was founded by Castiel, the Almighty Father, who is the highest of all the angels of heaven. Angels can progress in the clan and be promoted to higher ranks.
New initiates join the clan as Angels, and can be promoted to Principalities and Cherubim.
Initiates who become full members are promoted as Powers, Dominations and Thrones.
Members can be further promoted to elders of the clan, to include Seraphim and Archangels. The Almighty Father is the highest-ranking elder in the clan.
Almighty Father
Archangels
Seraphim
Thrones
Dominations
Powers
Cherubim
Principalities
Angels