There’s 3 versions.
1 From the Warfront/World Boss
1 From the Rares in the zone (The one in the “Sets” tab)
1 From the Warfront Quest Cache
Some Appearances are Shared between them. Some, like cloth, have more appearances shared between than others. Plate has only like 1 shared between them.
Darkshore has less.
1 from Rares/Warfront (the one in the “Sets” tab)
1 from the Warfront Quest Cache/World Boss
The most ornate looking one comes from the quest cache, which you can only get 1 piece every warfront. Which is obviously going to take forever to complete as it’s completely RNG. I’ve done Arathi on one horde and one alliance hunter every single arathi warfront since the release and I’m still missing the helm.