So just before I go about crafting a feller I've got a few quick questions.

Do these classes of demon folk share any like base traits? By that I mean like could they all do some shapeshifting for a different guise (as is many a demons wont to do) and share things like inability to enter hallowed/religious grounds, harm from holy artifacts, and other things like that. 

Also I figure I'd ask what kind of depiction of Hell looking at here? Is it something in appearance akin to Dante's tellings, something earlier where Hell is essentially frozen over since it is farthest away from God's love? The standard huge fires and flame? 

And of course I'd ask about the bureaucracy and power structure of Hell? Would we be looking at something like from the Ars Goetia which Solomon depicts a feudalist structure with a variety of lords of Hell underneath Satan? Or is it really just Satan in full command and not delegating anything?