I'm coming from an American perspective. So out of the names you listed, I've only personally met people with these:
Sara,
Monica,
Anna,
Jenny and
Nadia.
Sara - could be any age
Rosaria - 60ish
Federica - 50ish
Giorgia - no idea
Gabriella - 10
Marina - 10
Silvia - Either really old or really young
Gaetana - no idea
Monica - 40ish
Rosy - 90ish
Luisa - 80ish
Antonella - 90ish
Anna - 10
Fernanda - 20ish
Annamaria - 60ish
Jenny - 40ish
Maria Antonietta - no idea
Nadia - 20ish
Pass:
RosariaGiorgiaGaetanaRosyLuisaAntonellamaybe
Sara