A few things to note regarding Named User licensing for ArcGIS Pro.
1. Only GIS Professional (Advanced, Standard and Basic) User-type includes ArcGIS Pro (Advanced, Standard and Basic) license respectively.
2. Creator is the only User-type that is compatible to ArcGIS Pro Add-on license.
So, you could either upgrade your Editor User-types to GIS Professional (Advanced, Standard and Basic) user-types.
Or you upgrade your Editor User-types to Creator User-Types, and purchase ArcGIS Pro add-on licenses.
*However you may opt for Single-Use or Concurrent-Use licenses as well.
Think Location