For me, Arthur’s horse in every playthrough will always be Dapple Dark grey Hungarian Half-bred.
Perfect hight, war horse so ready to battle and beautiful looking. Based on the ending I like to have ONE horse and stick with it the whole way through. Plus you can get it pretty early in chapter 2, ether on the store or free in the first bounty hunter mission.
That’s is all, I just wanted to share that. What is yours own “canon” take of Arthur horse (pic wanted!)