To add to that (as I guess many will not know this — I certainly didn't until recently), the group of dialects is called Alemannic German, and is not exclusive

To add to that (as I guess many will not know this — I certainly didn't until recently), the group of dialects is called Alemannic German, and is not exclusive to Switzerland. There are similar dialects spoken in all of the surrounding countries — including, of course, Germany. Linguistically and historically it's part of the same language continuum as standard German, so the name "Swiss German" is not misinformative as some may assume from the fact that standard German speakers often can't understand Swiss German. There are other (probably many, though I only know of a few) similar examples of languages where people might assume the dialects are mutually intelligible, but they really aren't — Italian also being one. I suppose it's even the case in most countries/languages that there'll be dialects that are only barely mutually intelligible.