How about:
1. Britons extra range on archers in castle/imp
2. Ethiopians faster firing archers
3. Mayans cheaper archers
4. Vietnamese higher hp on archery range units
Or:
1. Huns cheap cav archer
2. Vietnamese higher hp cav archer
3. Tartar free thumb ring/Parthian
4. Mongol faster firing cav archers
In case you haven’t seen it, SpiritOfTheLaw has a great [video](https://www.youtube.com/watch?v=yd-MEP2p5iY&t=1s&ab_channel=SpiritOfTheLaw) on this!
Fast imp into gg:
Khmer – no building requirement
Italians – age up 15% cheaper
Byzantines – imp 33% cheaper
Malay – age up 66% faster