Does ArcGIS Pro have a setting for edge rendering in 3D? I'm looking at this blog post:
https://www.esri.com/arcgis-blog/products/story-maps/3d-gis/using-3d-data-to-understand-hurricane-patterns/
I see it is available in the AGOL Scene Viewer to choose between solid and sketch lines.
So far the closest I can find is a Mesh symbol for a color with edges in the ArcGIS 3D symbol style. It looks like it is just including a stroke symbol for a multipatch layer.