I am not sure if there is a kind of stylistic device in below poem sentence.
The king’s horses are purebloods, his barns cut stone; roans, blacks, dapples, bays; the granite reds, greys, blues.
If I understand correctly, the "normal" sequence should be:
The king’s horses are purebloods, roans, blacks, dapples, bays; his barns cut stone, the granite reds, greys, blues.
Is there a name/term for this in poetry?