I love
Agatha,
Antigone,
Eugenia,
Flavia,
Gertrude,
Hestia,
Leopoldine (so lovely and dramatic),
Odile,
Sybilla,
Alois,
Ambrose (will like more once I shake a current IRL association),
Anselm (looove the sound),
Bartholomew (the mew at the end is so sweet!),
Bertram,
Sigmund, and
Wolfgang. I like
Vivian too (especially on a guy) but it was oversaturated lately for me by 5 (!) different students of mine.