Hierarchy & Co. 

HIERARCHY
noun:  
hi·er·ar·chy
/ˈhī(ə)ˌrärkē/
noun: hierarchy; plural noun: hierarchies
~ A system or organization in which people or groups are ranked one above the other according to status or authority.
~ the upper echelons of a hierarchical system; those in authority.
~THEOLOGY:
~ The traditional system of orders of angels and other heavenly beings