How to default a Rating Model when creating a Content Item?

Recently we've realized that the behavior in our Item Catalog when adding a Content Item is different from what we anticipated. In the Person Profile Type, we have the following configured:

Under the proficiency rating, we have the Proficiency Rating Model defined as what should be tied to the Competency section of "Skills." However, when adding a new "Skill" in the Competencies Template...

we see that the Rating Model is not defaulted to the Proficiency Rating Model.

It has been our understanding that the Proficiency Rating Model would default here - what are we missing/how do we get the Rating Model value to default to the Proficiency Rating Model?