This isn't even all of the Athenian unit list. This is just about half. We still have two more Greek factions, and you'll see some generic hoplites with them. So, yes, we do have them.

There will be AOR, but it won't work like RTR's. Each faction will have their own specific AOR units, and there will also be a general list (although much smaller then RTR). If you're Macedon, and you control Iran, it will be a lot different than if you were Rome and controled Persia.