Based on sound:
Leander and
Eliezer - these have sounds in them that are currently popular, yet
Eliezer is barely in the top 1000 and
Leander is not there at all
Celia - I'd supposed it would be rising just like
Cecilia but it keeps hovering around 800
Raleigh - it looks like it should be popular with girls but it's not in the top 1000 for either gender
Cynthia - I can see why it isn't popular right now, it's a "boomer" name, but the sound is likeable. I expect it to rise in the next decade with the NN
Thea rather than
Cindy.
My virtual BtN babies:
👧
Leonie Sylvia👧
Ngaire Demetria Celeste👦
Dimitri Andreas & 👧
Helen Marina👦
Tor Vasileios & 👧
Ambra Loreen👧
Tessa Katrina Sky