Adding Supply Type to Advanced Location Configuration View

We have turned on the Advanced Item Location Configuration and when looking at the default views, NONE include the Supply Type (Purchase/Build) field. This field is under the Planning tab of the Item Location Configuration screen, but not in the Planning View from the Item screen.

When trying to Customize the view or create a new Custom View, the Supply Type field is not available as a field to be added, at least not with a similar name to Supply Type.

Does anyone know of a way to add the Supply Type to one of these views?

Thanks