View attachment 701318
Updated version with Greece and Persia. I think Greece is correct based on the shape of the icon and I think I can see Persia matching if I squint. The one between Maya and Persia looks to me like an animal, maybe the head of a horse.
I just saw this post. The civs appear to be in alphabetical order:
Row 1: A???, Aksum, Egypt, Greece, [blank (Han)]
Row 2: Khmer, Maurya, Maya, ???, [Persia (disagree)]
Row 3: Rome, [blank], [blank], [blank]
I think the first "A" is actually "Persia" with the Achaemenids, although there is a chance it could be Assyria.
I think what was identified as "Persia" is actually Mississippians, looks moundish to me. Either that or the one before it.
This leaves one civ between "Maya" and "Rome", and three after "Rome." This does seem to deconfirm Babylon, Byzantium, Gaul, and Goths at launch.
For the first gap, I could see the Muisca sneaking in as an antiquity civ. Other possibilities could be Nubia, Numidia, Phoenicia, and Palmyra (?!).
For the second gap, we have a lot more options to fill three slots. Likely candidates are Tonga, maybe Scythia, maybe Silla or Yamato, maybe Sumeria. Stretches might include the Saami, Samoans, Sogdia, Tibet.
My bet is Muisca, Tonga/Samoa, Scythia, and Sumeria. I think we will get at least one Mesopotamian civ and Sumer is really the only option left in the alphabet. I think we need an ancient SA civ at launch and the Muisca kind of win by default since the only other option open is the Tupi. Tonga could be exploration but I'm going with it since we know it's somewhere in the game. And I just want Scythia back.