Funny, lovage (which they mention near the end) is or was quite common here in Switzerland. My mother used it a lot while my generation uses it a lot less already. Still have some in the garden though.
Same in Austria. It's commonly called "Maggi-Kraut", because it tastes very similar to a sauce produced by Maggi (which is now part of Nestlé). Funnily enough, the sauce doesn't contain any lovage.
Not usual (but not hugely popular) in Czechia too.
Lovage is still used by Ken gardeners and cooks in middle class England