Ok, I have narrowed the list down some. Still looking for information on the following Arkansas Units:

Dan's Arkansas Cavalry Regiment
Fitzhugh's Arkansas Cavalry Regiment
Hindman's Arkansas Cavalry Regiment
Leve's Arkansas Cavalry Regiment
Rutherford's Arkansas Cavalry Regiment (I suspect this is a company from Dobbins 1st Arkansas Cav, but can't prove)
Sanders' Arkansas Cavalry Regiment
Shaver's Arkansas Cavalry Regiment
Weber's Arkansas Cavalry Regiment

I assume many of these aren't really regiments, but may have been companies or battalions mistakenly recorded in the CSRs as regiments.

Also still looking for a lead on Pall's Arkansas Cavalry Battalion

Thanks.