i think deities are like a colony of insects much like those in eusocial insects like ants and bees.
When one imagines a deity they are the sole governor of a respective thing, be it an element of nature, a conceptual thing, or all things and existence, they are meant to be the epitome of the thing in which they govern, however they are oh so often flanked by lesser beings, either other subordinate deities or auxiliary spirits or divine beings such as angels.
its my personal theory and concept that deities are very little without their helpers much the same way an ant or bee queen is very little without her colony. The deity requires their subordinates to perform various tasks on their behalf, for while they are the epitome of the thing in which they are in charge, it doesn't mean they actually do any of the work regarding it besides perhaps creating more creatures that do the work for them. I also must then believe that the different forms of sub-deities or angels, are a sort of caste determination, some are raised to be simple workers, others raised to be strong warriors, etc.
applying this to my, admittedly limited, knowledge of christian mysticism and angel hierarchy it would make the major deity the queen to the colony and the three choirs of angels the layers away from her throne.
in the first choir you have the ophanim, which are supposedly the wheels of the throne which i interpret more as the closest and most general caretakers of the queen like the young worker ants and or things like the male alate which only serve to help the queen reproduce.
this of course doesn't account for the seraph and cherub, but a deity will of course need more important tasks other than mating.
the second choir is hard to account for with the many varied interpretations of its existence and what angels are meant to reside there, especially given there are interpretations of the text that the dominions and powers are not angels but instead malevolent. regardless i would propose that they serve more as the general workers or specialized workers like the honeypot repletes, storing food for the colony.
the third choir of angels are often depicted as the most humanlike, and thus the closest to "foot soldiers", i would propose that these are much like the majors and supermajors of the colony serving as protection and the final to be developed as their only purpose is the protection and interaction against and with other species or in this case other deities and beings.
if anyone has other ideas that could work with this please let me know, also please correct me on either my myrmecology or theology. I am admittedly not the most well versed in either subject but this was a thought that came to me very suddenly and took a hold until i wrote it down.