What I gather isn't the troll druidism based on their LoA?
When you stretch it like that shamans are also a form a druidism.
In a way on Draenor where the shaman circle was formed it is very similiar. Their the elemental spirits serve the same goal as the Ancients of the Night Elves.
Admittingly most of Orc shamanism was based on their orc ancestral spirits which was made possible because Oshu'gun and the Naaru inside.