Hi from Spain rodzenpaulina.
Usually to do this, I use "computo de materiales de muro" (I suppose that in english version of Revit would be wall materials schedule or so), not the object or quantity schedules.
In this type of schedule, you can select more information related to each material in a wall, and then apply filters by material in order to display only the ones you need.
Regards.
Augusto Mora
Architect & teacher of Building Projects at CPIFP Pirámide. Huesca (Spain).
Revit 2014 certified profesional.