To me,
Lucy is a classic that everyone is familiar with yet is quirky enough to still be interesting. Other names that I think fall into that same category:
AliceEleanorBetsy (alone or as a nn for
Elizabeth)
FrancesFrancineJaneMaggie (alone or as a nn for
Margaret)
Molly (alone or as a nn for
Mary)
Susanna
Maria is a beautiful name too. I love it.