Expose something like global sibling index

Unity Engine
1

In addition to transform.GetSliblingIndex(), is it possible to have .GetGlobalSliblingIndex() or .GetHierarchySortIndex() ?

2

That kind of global sibling doesn’t exist for good reasons. It depends entirely on the hierarchy order. Everything you can’t have in the hierarchy is not achievable.

3

how does the unity 2d sprite achieve the sort order based on the hierarchy? or internally, it just traverse transform hierarchy.

4