Thank you for getting back to me.
This was based on a previously closed thread which used the "ElementType.Duplicate" node. The closest I can find is "ElementTypesMatchList" but this has different inputs. Perhaps I'm just missing the node from the package?
Please see attached screenshot of graph. I've selected the family from the drawing and created a list from an external Excel so just need to create duplicate family types and push the names in the list to the newly created families.
Reason this is needed is that we have a large number of family types which need to be managed from an excel/access file for ease of maintenance.