here is the list of factions whose units colour has been desaturated:

desaturated & checked how it looks in-game:

egypt from north to south:
Ramesses
Mernaptah
Seti
Abdju
Khent-min
Waset
Tausret
Amenmesse
Napata

canaan:
ugarit

halab
ashkelon
bay
irsu

mesopo:
babylon
ninurta


desatuated but have not checked how it looks in game :

egypt:
buto,
buhen

canaan:
emar
beersheba

this list is mostly for myself to follow up, may have a day delay before the update is uploaded.