The Bosses per wing are:
Last Stand of the Zandalari - Jin’roku the Breaker, Horridon and Council of Elders
Forgotten Depths - Tortos, Megarera and Jin’Kun
Halls of Flesh Shaping - Durumu the Forgotten, Primordious and Dark Animus
Pinnacle of Stone - Iron Qon, Twin Consorts and Lei Shin