Hey all!
Regarding Samael, I honestly can't remember what I was thinking when I placed him amidst the Demiurges. That might be an error, I thought I had him pegged as an Old One.
There are a number of complications around the Asmodeus, Lucifer, Samael, Satan type personae.
Lets see.
Satan is basically the same as Tharizdun, hes the Elder Elemental God - First One.
Lucifer is the former ruler of Hell, and a Greater Power. Lucifer may be the Avatar of Samael the fallen Seraphim.
Asmodeus is the current ruler of Hell, and an Intermediate Power. Asmodeus might be a servant (or former servant) of the Persian greater deity Ahriman.
So Samael could be the Old One that embodies the Nine Hells, just as each of the Seraphim embody one of the upper planes.
I should note that originally I had Asmodeus as a Lesser Power and Lucifer as a mere Intermediate power but I no longer think that is right.
Does any of the above make sense...?