Attached a project (Revit 2021) with some examples.
In the 3d view you will see two times some model lines (magenta)
When you look at plan view Level 0 you will not see the line (hidden by use of VG)
When you look at plan view Level 1 you will see the line (not hidden)
For level 2 I made a generic family. You will see it is not visible in Plan view Level 2 due to setting of visible settings in the family (not visible in Plan/RCP, Front/Back and Left/Right views).
This family can also be controlled by VG or making use of filters.
Have a look at the project to understand the concepts.
Louis

Please mention Revit version, especially when uploading Revit files.