Well, I can lay them out there again since we're back on this subject. I could just link my older post on it but meh. Most of this is speculation. Putting that disclaimer there now so people won't mistake that I'm saying this is 100% factual.
1st = Authority
2nd = Power
3rd = Body
4th = Memory
5th = Time(?) aka Eternity(?)
6th = Space aka Ether
7th = Dark
8th = Light
So the 9th to 12th Apostles are the only ones remaining that we don't know the traits of. My guess from after the update dropped was that they were Life, Death, Creation and Destruction. Because the 9th and 10th seem allied with the 7th, I assumed that instead of them being opposites like the 7th with the 8th, they're more about completing the first trait like the 1st and 2nd. So 9th would be Death while 10th is Destruction. Which would make the 11th and 12th, Life and Creation, if this is true. Those pairs of Apostle Twins could also be just Life-Death and Creation-Destruction.
Aglaecwif mentioned the 9th and 10th offspring follow the 7th. It would be strange for Life, for example, to follow the 7th's goal like a hypothetical Death and Destruction. Also, Imagine how crazy that team would be if they really did represent Death(9th), Destruction(10th) and Darkness(7th). The literal Three D's. Since the 7th's overarching goal, according to Valravn, is to cover everything in Darkness. Those 3 Traits together have the potential to bring upon said thing via the dissolution of the universe. I call it Plan D, personally. I'm joking, maybe.
Now let's go over the possible combinations for each set of Twin Apostles.
Authority(1st) + Power(2nd) = Control
Body(3rd) + Memory(4th) = Change? I couldn't really think of anything on the level of the others besides this.
Time(?)(5th) + Space(6th) = Spacetime?
Dark(7th) + Light(8th) = Unity?
Death(9th) + Destruction(10th) = Oblivion?
Life(11th) + Creation(12th) = Genesis?
If it's expected to have a being or beings above even the Arbiters then the 6 powers collapse even further into 3 powers or maybe join into a singular one of Perfection. Ella's true goal, maybe? That's where the speculation starts collapsing for me. It becomes way too speculative and gets to almost zero chances of being a thing. Not so much the singular God at the very top but moreso the powers at the very peak of it all.
That's what I'm cooking in the theory department currently. Still highly speculative, especially on the power combinations. Since this update went into the cosmic stuff heavily, I brought back more of my high end interpretations and theories. At first, I didn't think WW would go too deep into it with the cosmic stuff but this update they went all in so I'm bringing back the more insane stuff. Not the stuff like Memory Mommy being the Collective Unconsciousness for all beings in the universe while the 3rd represented the material universe, I was going a bit too far with those back then. But not as grounded as I became before this update.
Anyway, that's it from me. I got to get through this Zero Corruption playthrough. I can't believe my saves were jumbled up on it with saves from other playthroughs. Now I have to play all the way from back near the Jake fight again. The struggles with managing 4 Playthroughs.