Well being there isn't enough to go on a one season series. We'd have to go on what we know right. As i'd would take it, the Cylons were once
Reptillian and were a race of conquerors long before Count Iblis intervention messed around with their natural order and development. Whatever characteristics i.e their backround, warlike behavior and social graces the Cylons had before they became machines. Some of which must have been passed on.
The Imperious leader for example is the only one of their evolved 'machine' race. allowed to look like their original Reptillian Cylon brethren before the race of super-machine Cylons destroyed them. For some odd reason also uses the same voice as Count Iblis.
The motifs with the Cylons are based on the 'Roman Empire' itself. Terms such as "Cylon Garrison", "Centurions" and whatnot. And the number 3 seems to be another pattern Cylons choose to intergrate into their collective themselves. 3 Baseships travel together, 3 centurions per Raider fighter craft, 3 brained Cylons opposed to the I.L. series and the Two and One brained Centurions (should you take into account the novels.).
Below the Imperious Leader are I.L. series Cylons. For some reason or another are the same Cylon use to elect another Imperious Leader. Although they aren't as evolved due to the Cylon's leader using a "Third Brain". I.L.'s also wear clothing. And have some sort of regal stature to themselves. they some across as outpost commanders, leaders, governors etc and do not do any field combat at all. Just like the Roman government of old. I.L. Cylons have a place as dignaries.
So it stands to reason, even a race like the Cylons who are now machines have a underbelly of workers or sub-division of machines that run the empire minor everyday day to day goings on.
To me the Cylons have a class system, similar to the Minbari of Babylon 5.
A regal class of superior Cylons - imperious leader and the I.L. series cylons who are of the same group.
A warrior class. - Centurions
And a civilian class of workers - A sub group of all kinds of Cylons. meant for the backbone maintaince of the empire itself.
KJ