So, I get the idea of the origins of the maldraxxi. A mortal soul was sent to Maldraxxus (before the drought of course) and the flesh crafter made a abomination construct body for them, so they can fight the shit out of each other and threats.
But what about venthyr, night fae, slvar, vorkai and so on? Were they once mortal souls that took the shape of one of these or were they once "made" by higher beings like the ember court (Renathal, The Accuser...) or eternals (Denathrius, Winter Queen...).
To make it clear: I know that mortal souls can take the shape of animals in ardenweald or become kyrian or venthyr in bastion or revendreth.
So my question is:
Are some of them (ventyr, night fae, vorkai, sylvar) just crafted out of anima to get shit done in each realm/covenant like dredgers or provost or do all originate from mortal souls?