Fascinated by Christian Concepts

I've always been fascinated by the Christian concept of angels and their hierarchy to G*d. I am Jewish, and we have the Malach (messenger/angel)the Irinim (Watchers/High Angels), Cherubim (Mighty Ones), Sarim (Princes), Seraphim (Fiery Ones), Chayyot ([Holy] Creatures), and Ofanim (Wheels). For those the physical plain [called 'Arcs', by Christians?], they collected into the Adat El, a divine assembly (Ps. 82; Job 1) which consists of Zeva,(Host), B'nei ha-Elohim or B'nai Elim (Sons of G*d), and Kedoshim (Holy Ones).

The only named ones are Michael, Gabriel, and Satan.

I've always felt the ranks of Angels swelled with the inclusion of Roman religious concepts into early forms of Christianity. Any thoughts?

-G
Let me know if I am getting too deep, just say- S'hut the hell up Crat and read the manga.' ^_^