Swobu_AB
Having just done 1.5 and 2.0 in under 2 weeks.
Umbral planes has one (tradable twink loot)
Bloated Girplan has a Tacvi/Time level one (no drop)
Discordling Spiritcaller has same Tacvi/Time level one (no drop)
None of the other fights had any loots beyond the quest item.
I believe there is a finite number of items on the Chest drop table since I have seen the same drops on various classes epic fights.