To iterate a bit the dead have way more going on than just eating emotions and even then I would argue that they just eating emotions is different than what the dead do in that they eat a single emotion.I mean... "The Black Hearts: found family made up of those who broke away from their original family's feeding restrictions. They eat emotions"
Furies are the daughter of Nyx (or the blood of Ouranos spilled on the earth) iirc, so Outsiders would fit more than Dead, since even though they work in Tartarus they aren't dead themselves.
As for the Abrahamic stuff, they literally have Judas and the Nephilim (I'll give a freepass for Angels, given we could just consider it generic divine servants).
As for the Furies, they have a connection and are more associated with the underworld than they are with outsiders' connection with Nyx and even then I don't see that as outsider material with the closest thing that makes them outsiders being that they tend to descent up to earth to punish the wicked in mythology
Nehpihilim at least from the description given is just a name seeing as it doesn't give any connection to their namesake unless we get more info.
As for Iscariot their claim to be descendants is an important bit as the claim part though if the book goes on more on Abrahamic religion were probably going to have to see but that is currently the only thing that comes close to it unless you count the names.
Edit: Also the reason why I am fine with the Iscariot bit is quite simply the Lancea Sanctum back in Cofd made that claim and similar to Iscariot that claim is teneous until we get more info in my mind at least.
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