Sheep are always cute. That's a fact. But cute is a spectrum, you know? I mean, there's "aww, so cute," all the way to "omgit'ssocuteIcoulddierightnow!!."
Depending on how full their wool coats are, sheep can cover such a large swath of that spectrum that they are practically rainbows.
But if there is one breed that everyone agrees belongs at the top of the cuteness pyramid, it's these ones.