The same way they always have? (Don't ask me what that is. I never played TSL before Civ6, and very, very rarely with Civ6.
) Presumably the Ottomans would start in Asia Minor and Byzantium in Greece. I mean, starting in the Balkans would already look pretty ugly on Firaxis' TSL map: Macedon, Athens, and Sparta must start right on top of each other, with Hungary, Poland, Russia, Germany, and Phoenicia all breathing down their necks.
I make it a policy to ignore what the Party claims.
I find them unlikely for Civ6, but I'd
love to see Bohemia in Civ7.