Hazelmeres Blessing clarification

Just hoping we can get an official clarification on what types of drops can be doubled under the effects of this buff.

Of course regular drops that simply drop on the floor and you pick up would be affected, but what about other loot systems? Elite dungeons technically drop on the ground and then get vaccumed into the chest(i think), Zamorak uses a loot chest, Zuk uses a loot chest, Croesus uses a loot chest, Telos/AG use a sort of chest system, and Vorkath uses a lot of individual loot chests. Which of these(if any) will have the ability to be affected by Hazelmeres Blessing?