As much as I love a good light weight DE like XFCE, KDE plasma has been the best experience on multiple distros including Debian and Arch. It’s the closest thing to an accessible windows-like experience with all the customization you wish you had in windows with so many applets and widgets that fill in so many gaps in other DEs.
Most cheap usb switchers will use them on the computer-switch side. I have a few models that I was testing out so I have a small pile of these. They’re great for cutting in half and using as a small usb power supply cable to breadboard projects, along with the horde of 5w Apple chargers I have in a bin.