In Poland practically ALL baby names are either common - just common - or very common. Or extremely supercommon (like Julia, Lena, Amelia, Zuzanna etc. - the most common female names in the generation of the current kids/teens). When someone decides to give their baby an unusual name, they are accused of being snobs (something like: "what, a normal name isn't good enough for your kid? Are you someone better than us or something?") I knew just a couple of people with rare names - and just FOUR of those were VERY rare names (Domicela - a grannie name, Darina - very pretensious, Ścibor - an old Slavic name and Benita - not a Polish name, though the person who had this name was one hundred percent Polish; her two brothers had very common Polish names from what she told me when I asked her about this). All the rest of rare names of those people I knew, were just normally rare ones - I mean, they were not common but any means but they were, as I already said, normally rare to put it in this way.
In the youngest generation, old names from the generation of my grandparents, got extremely supercommon - Stanisław, Antoni, Jan, Franciszek, Maria, Zofia, Weronika, Wiktoria... all of those were the classic examples of old folks' names in my generation. There is another category of names though in the youngest generation - so called "pathology names" - you know, English names given to Polish children. The most classic examples of those are Brajan and Dżesika - yes, a Dżesika spelled in this very way, adapted to the Polish spelling; even an ordinary Jessica name given to a baby in Poland would be pretensious but a Dżesika is EXTREMELY pretensious.
Generally, people are more tolerant when it comes to unusual names now than they were in the previous generation, they are more open to differences. I knew just one person with a very unusual name in my generation - Alan - that boy from my class in elementary school who, I strongly suspect, was an aspie too. There is that well known singer, Michał Wiśniewski in Poland who gave all six kids he has with, I believe, three or four different women, VERY unusual foreign names - Xavier, Falco Amadeus, Noel Cloe, Vivienne, Etienette and Fabienne - which sounds like this proverbial Sesquipedalian Smith because Wiśniewski is a very common last name.