Making Dependent ListBox or ComboBox from Pre-Made Validation List

I have not found success from my previous post; so I am thinking it is because my title from the other post was throwing people off.

Essentially I have a validation list that populates from a list. I am going to put a ListBox or ComboBox on top of the validation list. How do I get the information in the validated list to automatically show up in the ListBox/ComboBox? I am unable to use the normal way of ranging the ComboBox/ListBox and has to be linked to the Validation List.

An example is attached.

Thanks!