Thanks for ZOR!
In the theory the Magyar Horse Archers and the Elite ones should be ZOR in Etelköz (Ukraine) AND in the whole Carpathian basin.
But in the reality of the game the Magyars can settle in any part of the map.
This is a reason not being a ZOR-type army.
I do not know if you know it or not, there were Magyar tribes who remain in the Khazar empire. After conquering the Carpathian basin the two parts of the nation lived in different way. In 1231 a monk found the orient Magyars yet. Interesting fact.

The Bulgarians and/or the Pechenegs should attack the Magyars. The first attack can be in the beginning. The second only in 895, you know. But I think in every game will bring other results.
HIstorically the Magyars were the protectorate of the Khazars but I do not know how would it work in the game.