I love
Amedeo and might seriously consider using it, if it weren't the name of a disreputable great-uncle of mine.
Marcello is nice, and reminiscent of Mastroianni, one of my favourite actors.
Ariel, unfortunately, is the name of a well-known brand of laundry detergent in Italy! Nati I've never encountered, I'd suspect it's a nickname.
All the others are ok, though not really my style, except for
Jacopo, which is a bit cumbersome and reminiscent of
Ugo Foscolo's 19th c. novel "
Jacopo Ortis' Last Letters", the Italian counterpart to "
Young Werther", a very boring book you're generally forced to read in high school.