I wasn't sure if this should go here or in technical help, so I apologize if this is the wrong place.

I've been building local MICs all over as Hayasdan, specifically in Antioch, Damascus, Babylon and Asia Minor. Even though the MIC and recruitment viewer say I should be able to recruit a bunch of people (Arabian soldiers in Babylon, Anatolian and Hellenic soldiers in Anatolia, Jewish Spearmen in Damascus, etc.) building those barracks hasn't expanded my recruitment pool at all.

In Sinope, for instance, a level 4 regional MIC says (in-game) that I should be able to recruit Hellenic skirmishers, Hellenic skirmisher cavalry, classical hoplites, heavy skirmishers, Hellenic slingers, Hellenic spearmen and Hellenic archers but building it only lets me recruit the Hippakontistai. The recruitment viewer agrees with the in-game description.

Why can't I recruit these soldiers?