Swiss?
You mean from Zurich/Luzern/Basel
the German part
or from Lausanne/Geneva the French part?
Dartzeel,Goldmund, CH, Stenheim, Tron, Eternity Joe, Swissonor, Audio Consulting, Manufacture Le-Son, Audionautics, SoundKaos, etc are from the French speaking part.
Heil AMT is from the Italian part with German and Japanese influence, while Boenicke, Weis,LumenWhite, Klangwerk, Soulution, Piega, Colotube, Revox, etc are from the German speaking part.
Illusonic and Rowen are either on the border or are in the French and German parts.
Culture is quiite diffeent between the various language areas and Switzerlnd borders France/Germany/Italy and Austria, so I guess would be heavily influenced by them too.