My theory is just, popular sounds... Har- like
Harper, arl like
Arlo and
Charlotte and
Scarlett, -oh ending sound like
Willow which is vaguely masc but non-mannish.
I don't really like it.
I like
Margot, and
Meadow,
Cielo, and
Willow more.
I like it about the same as
Halo and
Rio.
I like
Marlowe,
Cleo,
Shiloh, and
Indigo a bit less.
- mirfak