Hi,
The vCenter Orchestrator doesn't not apply any sorting on the objects returned by the vCenter Server. This means the order of the objects depends on the vCenter Server. I can only speculate that vCenter Server returns the objects based on their creation order.
Just one clarification question: does the order changes everytime or if you are looking at the same inventory it is not sorted but it doesn't change everytime you look at it?
Also is this an issue for you?
Thanks,
Milko