Is there a geoprocessing tool or a Python script that would allow me to copy and paste a layer in the Table of Contents?
Make Feature Layer (Data Management)—ArcGIS Pro | Documentation
or
Alphabetical list of arcpy.mp classes—ArcGIS Pro | Documentation
map, methods addlayer or insert layer.
In any event you will have to know the origin featureclass or layer
Thanks, I'll try it