Colonial Dragoon

Slightly faster, and quicker training than European light cavalry but has weaker HP, LOS, armour - meant primarily for suppressing foot infantry. Fortunately it does not have an attack penalty against enemy melee cavalry, like Native Lancers or Permanentes Cuirassiers, and also has a ranged-base attack which it can use if running away.
====Notes====
American civs - USA, Mexico, Portugal, Perú - all do not have heavy cavalry until the later part of the game. 
*Guard Cavalry is the only unit available for all of them at the beginning, until Hussars make an appearance.