Well, "sophisticated" is obviously highly subjective...
You might like:
Woulter, Julius, Julian, Henrik, Harold, Franziskus, Flavius, Florian, Fabian, Roman, Ranulph, Thorfinn, Ignatius, Cedric, Aurelius, Ernest, Ludwig, Wolf, Bear, Abraham, Rafferty, Cornelius, Ulysses, Vincent, Lucian, Dashiell, Silas, Silvano, Slyvester, Tristan, Barnaby, Taron, Severin, Flurin, Hollis, Ellis, Eden, Avery.
Idk. I should have put most of those on the artistic middle class or the hipster thread, I guess. But here you go ;)