I found that the very good and useful script that @Dieter_Vermeulen posted here: Element View Generation in Revit with Dynamo | Revit beyond BIM needs a solid in/at the first level of nesting in a Family.
(in a sub-category, not set to be invisible (Visibility=False), that doesn’t work.
Therefore my View Templates need to be altered.(sub-category need to be turned off)
I just have nested Families at the first level, so what would you do?. 
