Rebuild 2.0 covers 13/26 episodes of NGE involving 8 Angels. I believe Anno combined the Angels to save time.
The 3rd Angel is a combination of Gaghiel and Matarael.
The top half of 3rd looks like the skeleton of Gaghiel with a skull and mask and core in mouth
The 8th Angel is a combination of Sahaquiel and Leliel.
When first seen, the 8th looks like a black sphere: primarily black in coloration with white-eyes. This is a clear lift to Leliel's image and the ability of distorting space.
The 9th Angel is a combination of Bardiel and Arael.
The 9th clearly is a copy of Bardiel that has infected Eva-03. However unlike in NGE; the 8th affects Asuka instead of Toji as we all know.
In a scraped scene from the CRC it is shown that Asuka converse with what is assumed to be 9th. During this segment 9th is talking about Asuka's psychology.
The 10th Angel is a combination of Zeruel and Armisael .
The 7th Angel is a combination of Israfel and Sandalphon. Hear me out with this one.
Just as how the prior 3 Angels in NTE are combos of two NGE Angels; the 7th angel represents the two Angels that Asuka fought against in NGE; in what was generally considered as the "camp" episodes.
I believe Anno combined NGE-Angels in order to streamline 2.0's runtime; thus he combined the two instances of Asuka defeating an Angel into a single event event with a throwaway angel fight.
The design of 7th lifts Israel's yin-yang face in early concept artwork. the tri-digits of Israel's appendages probably inspired the 3-point geometry seen with 7th.
At this point every angel in NGE has been shown/reused by 3.0.
NTE has a total of 13 Angles.
The only odd thing is the missing 11th Angel that was skipped between 2.0 and 3.0.
What the hell that is idk