In ArcGIS Pro the Display Label for pop-ups like the Identify window currently default to the field name alias. The only way to configure the pop-up to show the field name in the Display Label is to manually edit each field format in the the Configure Pop-up Field Options window. For an attribute table with many fields, this is a cumbersome process. Similar to the toggle in the attribute table options, it would be nice to be able to easily switch between displaying the field name and the field alias.
Screenshot above shows upper fields that have been formatted to show field name, while lower fields show the default field alias.