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
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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.
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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.
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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.
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Combined pics
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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