The Swiss-German Keyboard layout in ubuntu is wrong. The position of the Vertical Bar (normally at number 7) and the Broken Vertical Bar (normally at number 1) are switched. Wikipedia also had
Polyglot – StenoKeyboards
Schneller tippen mit der Schweizer-Tastatur fürs Handy | Tages-Anzeiger
MoKo Foldable Keyboard, Universal, Portable Wireless Bluetooth Keyboard, Rechargeable Ultra Thin Bluetooth Keyboard, Ergonomic, Compatible with iOS, Android, Windows, Tablet, Smartphone, Laptop, Grey : Amazon.de: Computer & Accessories
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SAMSUNG Multi Bluetooth Keyboard (Bluetooth, Schweiz, Kabellos) - Interdiscount
Endlich wieder ein gutes Phone mit echter Tastatur – Daskannwas.ch
Tragbares 10-Zoll-Ultra-Slim-Wireless-Tastatur-Set Für IPad, IPhone, IOS 13+, Tablet, Telefon, Smartphone Und Windows! - Temu Switzerland
Click, clack, enter: Assembling my first keyboard - digitec