I’ve never seen anything marketed as fruit juice that did not consist of only fruit. If there is sugar added, it’s a different kind of drink and the label does not say that it is fruit juice. It might contain fruit juice, but it’s not called fruit juice. But I live in the western hemisphere so maybe the standards are different where you live.
Italy, and they're not called "Fruit juices" of course they're called "Succhi di frutta", of which fruit juices is the literal translation.
Yes they have always been called "succhi di frutta" even if filled with sugar and other stuff, I had no idea that in some countries those are not called fruit juices.
Yes, at least in my country (in Europe) I'm pretty sure that it's a recent trend to favor 100% single-fruit juices.
And I've seen the traditional juice fruite producers come up with increasingly comical/tragic ways to address it:
HUGE 100%, miniscule "natural ingredients" below it (so no motor oil at least xD )
HUGE name of a specific fruit, such specific fruit all over the box, big "100% fruit" and label saying 99.9999 apple, 0.0001 specificfruit powdered extract
Anything that’s not 100% juice isn’t really juice. It’s typically marketed as a fruit “drink“.