OnObjectCreate event

I need a way to detect when a new gameObject has been created or added to the hierarchy. The intent is to speed up development time for specific gameObjects that will always need the same configuration or component(s).

I tried EditorWindow.OnHierarchyChange() but it seems expensive in that it fires for EVERYTHING, new objects, deleted objects and values changed on objects, and I can't find a way to only parse the changed or new gameObject. I have to make a loop that parses every single object in the scene. Imagine this getting ran on all gameObjects every time a single value is changed.

 foreach (Transform x in Transform.FindObjectsOfType<Transform>())
         {
             // code to parse every gameObject goes here
         }

Heres an example of a perfect world

 EditorWindow.OnHierarchyNewObject() += ParseNewObject(newObject);
 ParseNewObject(GameObject theNewObject)
 {
     // onetime heavy lifting code goes here and only runs on the new gameObject
 }