Yeah, mostly the same on my US keyboard, except a couple like "@" (that's shift-2 on basically all US keyboards, and is printed on the key) and |/\, which are more prominent on US keyboards (two simply have their own keys, no shift modifier, even). I get the © symbol for option+g (which still kind-of makes sense!)

I appreciate that the designer of the layout clearly attempted to make some kind of mnemonic connection to the degree they could. Makes it easier to discover and remember the key-combos, even without a cheat sheet.

Ah! © is on C (makes sense!)

That's c-cedille here, because to write English fluently you need to be able to type French loan words like façade—but not quite so often as someone in Switzerland, probably (especially so in some parts of the country!) so I assume you've got it somewhere even more prominent on your keyboard.

Except for international where € is opt-shift-2 (next to the pound/hash), next the to dollar

modifiers:

opt-e+letter é (acute/aigu)

opt-`+letter è (grave)

opt-i+letter û (circumflex)

opt-u+letter ü (umlaut)

opt-n+letter ñ (for the mañana)

my favorite example of this is ellipsis … opt-; (the key with the colon over the semicolon is sort of a rotated ellipsis)

thank you for teaching me √