I don’t have any data sadly, but from what I’ve seen in tournaments:
**Tatars** have flexibility and that ridge in the center of the map can give quite a big boost with their elevation bonus.
**Britons** additional range for archers can be very useful for pressuring eco, given the small sizes of the base.
**Bulgarian** MaA may prove useful for preventing the early full wall, and an early krepost on the central ridge is quite common to see.
**Mongols**: There’s a lot of hunt on the sides to accelerate your early-mid eco, so they could be dangerous if you can get scouts out while they can still do damage.