Just three units, but should do nicely.
Basic Impetus 2.0 list a unit of Light Cavalry it calls Flankers.
This is my representation of them.
I went for a standard uniform for these guys.
These are the Tagmatic Kavallaroi with general and Saint Zoe icon.
The icon was printed off the Wikipedia entry for Zoë Porphyrogenita.
Note purple cloaks.
Classed a Medium Cavalry to give them mobility,
but with the factors of heavy cavalry to give them a punch.
I'm not going to guess at what this name mean,
but I've gone for a more mercenary look.
Another potent unit, with Light Cavalry maneuverability and the able to charge home.
I have more cavalry to paint if I want to expand the army, but my immediate job was to get them on to the table top. Stay tuned.