There are probably a million things wrong with what i am attempting but anyways...
In Pro, I have set a non-elevation dataset as the ground elevation layer so that i can use the 3D profile viewer to see a profile of values along the line, and it functions as i expect...

When i try to publish the layer to our enterprise portal as a tile layer (right click the ground layer in the TOC, share as web layer (tiling scheme arcgis online/bing maps/google maps) it publishes successfully, but nothing displays in the viewer and if i try to use in experience builder profile viewer, there appears to be no data in the layer..any idea what i am doing wrong on the publishing or how to get the values in the layer if i attempt to publish as an elevation layer?
Thanks