I'm not a fan of
Giulio. I just don't like it. 1/5
Caio is a nice first name. I wouldn't use it myself though. 3/5
Niccolò is nice as well, but I wouldn't use this one either. 3/5
I don't hate
Damiano, but it's certainly not a favorite. 3/5
Tiziano... nope. 2/5
Fabrizio is a good name, though I prefer
Fabrice. 3.5/5
Rocco works as a nn, but not as a fn. 2/5
I like
Arturo alot. preferably as a mn. 4/5
I like
Leonardo alot too, but it's a bit overused. 4/5
Though it isn't pronounced the same, it remindes me too much of
Caesar. 2/5
My rating is based on how usable it is for me.
Even though, I might have given a name a "bad" rating, I don't necessarily hate it (except for
Giulio; I strongly dislike it).