Brubar 说:
yeah actually the Golden Horde was mainly composed of Tartars and not Mongols. Well there was some Mongols, but very few. But anyway Kauaik already told it.
I only wanted to add that we'd have to search for Tatar armors / looks for the 1257 GH.
I agree but I'll be devil's advocate

On the one hand it is well documented how Cumanified the Golden Horde was, or how much foreign auxiliaries were used in the Ilkhanate, but on the other hand some of that impression comes from these states in the later 13th and early 14th century - right now it's been a few decades since the Mongol conquests. For instance Ian Heath records: Batu's army of 1236 in Russia: 70-100,000 Turks, 50,000 Mongols. Depictions within the Armies & enemies of the crusade booklet cite two Ilkhanate light horsemen who 'betray considerable persian influence' yet are based off a primary Islamic illustration from the very start of the 14th century.
What we could do is try and stratify the Mongol successor states (like what we've begun to with the Anatolians) where the bulk of the troops are natives (Armenians/Seljuks in Ilkhanate, Tartars which I believe were primarily Cumans in the Golden Horde) and then the Mongols form the elite core - the generic mongol horseman would be high level (If lightly equipped). That way we could feature some more true-blue Mongols, who at this time probably would not have adopted widespread domestic fashions. Since we're talking about a Mongol dominion only about 30-40 years old, aren't we? At least for where they exist on our map, and judging from other examples (Armenia/Byzantium slowly adopting Latin fashions, Umayyads slowly adopting Iberian-Christian fashions, ect.), it might not be hard to suggest the hardcore original Mongolians would look like they did in their previous decades.