From WoWWiki

Sets of similar armor types (cloth, leather, etc) share the same models but with different colors, much like the classic AQ sets. These sets can be purchased from Yrma at Sun's Reach Harbor on the Isle of Quel'Danas. Non-set armor that drops in Sunwell Plateau can be turned in--along with one [Sunmote] for each piece--to Yrma for these higher-end pieces. Similar to Zul'Aman loot, these sets emphasize spell haste rating and armor penetration. The skins of the new Tier 6 armor for waist, wrists, and feet match the Sunwell armor instead of the original Tier 6 armor sets. These sets do not offer class-exclusive bonuses and some items would work for different classes of the same armor type.

Cloth

[Helm of Arcane Purity]
[Shoulderpads of Knowledge's Pursuit]
[Robes of Ghostly Hatred]
[Gloves of Tyri's Power]
[Pantaloons of Growing Strife]

Druid (Feral)

[Mask of the Fury Hunter]
[Demontooth Shoulderpads]
[Bladed Chaos Tunic]
[Gloves of the Forest Drifter]
[Leggings of the Immortal Beast]

Druid (Balance/Resto)

[Cover of Ursoc the Mighty]
[Spaulders of Devastation]
[Utopian Tunic of Elune]
[Tranquil Moonlight Wraps]
[Breeches of Natural Splendor]

Shaman

[Shroud of Chieftain Ner'zhul]
[Erupting Epaulets]
[Garments of Crashing Shores]
[Gauntlets of the Ancient Frostwolf]
[Kilt of Spiritual Reconstruction]

Paladin

[Helm of Uther's Resolve]
[Spaulders of the Thalassian Defender]
[Noble Judicator's Chestguard]
[Judicator's Legguards]

Warrior

[Crown of Dath'Remar]
[Pauldrons of Berserking]
[Breastplate of Agony's Aversion]
[Felstrength Legplates]

Armor sets
Class sets		Death Knight sets • Druid sets • Hunter sets • Mage sets • Paladin sets • Priest sets • Rogue sets • Shaman sets • Warlock sets • Warrior sets
Dungeon		Dungeon Set 1 • Dungeon Set 2 • Dungeon Set 3
Reputation		ZG: Zandalar Tribe set • AQ20: Cenarion Circle set • AQ40: Brood of Nozdormu sets • Sunwell: Sunwell sets
Tier (Raid)		Tier 1 • Tier 2 • Tier 3 • Tier 4 • Tier 5 • Tier 6
PvP-		Arathi Basin set • PvP-Rare • PvP-Epic • Veteran's • Vindicator's • Guardian's
Arena		Season 1 Arena rewards • Season 2 Arena rewards • Season 3 Arena rewards • Season 4 Arena rewards