I think Dragatus concluded Hussars make for the most punch for your buck here
That depends on whether you're using the LC retinue solo or if you're mixing it with your levies. Either way my last test only covered Hussars and Caballeros (and the standard Cavalry retinue) to determine whether a defense bonus or an attack bonus was more useful. I suspect Berber Cavalry or Himalayan Mountaineers would both actually be even better, with Berber Cavalry excelling when mixed with levies and Himalayan Mountaineers excelling when used solo (they would use the good Harass tactic instead of Disorganized Harass).
A high offense is more useful when you're mixing the LC retinue with your feudal levies. Here the levies take over much of the damage absorption, so doing extra damage during skirmish phase is more important. When used solo though the retinue is taking all the damage so it's own defense becomes a lot more significant and defensive LC perform better. The same principle can be applied to all skirmish focused retinues (anything with a lot of Light Infantry, Light Cavalry, Archers, or Horse Archers) and to a lesser extent to retinues in general.
Here's the spreadsheet with the results of my retinue test for version 2.8 of the game: https://docs.google.com/spreadsheet...tcum7SrvftXsIOF-eIhArwIIU/edit#gid=1397225253
If you want to know more about how the testing was done, it's explained in the thread I made: https://forum.paradoxplaza.com/foru...d-retinues-for-2-8-1-1.1089330/#post-24102207