I have finally completed what threatens to be an ever-growing morph.
The aggregated force:
This aggregate army gives me either:
III/1 Slav: Definitely III1c Southern Slav, and options to combine Vikings or Carolingian period German Knights to cover III/1a. The 1b army Western Slavs are spear-heavy, so probably not those.
III/16 Khazar: Pending the completion of a bolt-thrower, only the more mobile options.
I have put together two war-wagons as at Dec2021, so that the army will also suit III/47 Pecheneg very well.
For foot troops in particular I tried to paint with a natural fiber, natural dye kind of blend. Mounted troops get more rich silk and bold type colors.