I picked up a pack of Egyptian cavalry from Old Glory at the same time I picked up the Chariots. The pack comes with 10 models with separate horses and riders. There are two models for the riders. One with a box, and the other with a riding crop? My Kushite army is already dense with Skirmishers and missile weapons, so these will provide a little mobility to protect the flanks from the Assyrian Hammer.
This is a case where the tiny horses are actually more true to history than other collections. I envision these guys represent scouts and couriers rather than functional battle cavalry. The bow armed troops fit in rather easily, but I wasn't sure what to do with the other riders. I decided to just bunt and add Javelins in their left hands rather than try to deal with shields or the riding crop.