In my current campaign I am trying to create a multi cultural empire and to reflect that I also decided to recruit noble troops from every faction available. The thing is they are not distinct enough and most of them field heavy cavalry. Some of them are utterly useless.
Here is my suggestion for a bit of variety among the Calradian noble troops:
Battania: Heavy Spearman with throwing weapons
Sturgia: Armored Archers (Vaegirs have the best archers in the previous game)
Empire: Heavy Infantry
Aserai: Light Shock Cavalry or Camel Cavalry
Khuzait and Vlandia can keep their Horse Archers and Knights.
Here is my suggestion for a bit of variety among the Calradian noble troops:
Battania: Heavy Spearman with throwing weapons
Sturgia: Armored Archers (Vaegirs have the best archers in the previous game)
Empire: Heavy Infantry
Aserai: Light Shock Cavalry or Camel Cavalry
Khuzait and Vlandia can keep their Horse Archers and Knights.