> I don't know any women named Daniele or men named Danielle.

I wouldn’t be surprise to meet a (female) Daniele. The second L is already dropped somewhat regularly in Michelle. Which is interesting because it came from the French, but since then the French spelling drifted to "Michèle" (and then more or less fell completely out of fashion, and then seemed to come back for a while). In any case, both are pronounced exactly the same way.