There wasn't too much salary sharing when I worked in Germany, in fact, it was the usual "keep everyone in the dark" approach from HR.

If the company signs the yearly tarif agreement done between the government and unions, everyone knows what someone at Tarif XYZ is earning.

You don't need a public list from HR, and almost everyone will answer when asked "do you mind telling me...".

Surely there are people that will answer that they rather not, so far I haven't bumped in such people so far.

Netherlands too, and Belgium as well, AFAIK.

That's definitely not true in France.

Unions and CSEs try to give some transparency on salaries for a given position in a given company, but even then, it's not like knowing the salary of everyone.

It is already more than what apparently happens in US.