This is not possible. If you want the points from the named objects, you have to “extract” them from each object. e.g. from a line start and end point, from a surface (square) the corner points, from a polyhedron (solid) the corner points. If you want to do this with visual scripting, you need a “switch” for the object types mentioned above.

I don't know what you intend to do with the aggregated point list, but it seems that Visual Scripting is not the right tool for this. I would try the Python API and “wrap” the required code in a PythonPart.