Above are images of the 28mm Mitanni chariot from late sculpter who produced the wonderful 15mm Chariot Miniatures ranges.  It is available from Magister Militum in a very small range Mitanni range. It is a big model and it sits impressive on the tabletop.  Horses are possibly best chariot horses in my collection. I used Army Painter ink on this with very limited highlights afterwards.
The Mitanni chariot warriors all seemed to have been very heavily armoured and well equipped. Cannanites and Syrians looked similar(elite units) but probably not all were so completely armoured to the extent of the Mitanni.