I've been searching all around, but it's pretty hard to consolidate a tier list for desirable kamihimes/ eidolons...

The general consensus I find around these parts is: Sol is pretty much what everyone goes for... and that's about it.

Are there any specific kamihime/ eidolon (single or combos) that are absolutely worth keeping, or is it pretty much dependent?

As an extra question, I've spreadsheeted a couple of SSR rolls that I don't exactly know whether to keep (well I'm a newbie), which goes:
Account 1 (Tsukuyomi (Light))
Account 2 (Azaroth, Uriel)
Account 3 (Azazel, Michael)
Account 4 (Unleashed Amon, Apostle of light Satan)
Account 5 (Apostle of light Satan, Azathoth)