The Stellarium satellite plugin by default shows all the artificial satellites' orbits around Earth. I’d like to be able to view only certain satellites so that the view is not cluttered with every satellite in existence. Is there a means to create a custom satellite list, or view only relevant satellites?
Satellites are provided by a plug-in (that is enabled by default)
Configuration (the spanner-and-star button) -> plug-ins -> Satellites -> configure. You can configure which satellites to display from here.
It might be worth noting that meteosat-8, a geostationary satellite has a magnitude of about 19, and so is not a naked eye object, and is in fact beyond the capabilities of most amateur equipment.