Khwarazmian Horse Archers. Ghengis lis. Other Horse Archers. Should they not have combat shy ability as it appears most other nations in similar zones do ?

Don't think so. More of an argument that the steppe Turkic-Mongol Flexible types should not have Combat Shy than some should IMO.

So the other lists are incorrect? Surely if this type of horse archer is combat shy then they all should be !!!!!

Other way round - if you want them to be all the same you'd have none with Combat Shy.

However, I think that most of the ones that have optional Combat Shy are probably justified. Could argue against some of them maybe, but its not something that bothers me - more interesting stuff to ponder IMO.

Ok if you say so. Would have thought from your initial comment where it appears that other lists are incorrect that it would be a good idea to fix them but hay ho whatever 🤷‍♂️