Nevaeh: I really like the sound but I always have to think how to spell heaven when writing it because the "ae" trips me up. It's a fun, modern name.
Nyx: If you hadn't put
Nevaeh,
Nyx would probably be first. It's a short, simple name but also ancient. I could see it in a themed sibset with the likes of:
Usagi,
Serenity, Moon,
Luna,
Serena,
Soleil, Estelle/a,
Celeste,
Terra,
Eartha, or star or planet names. Or other god/dess names from myth.
Noa: too similar in sound with
Noah and I knew a few Noahs in high school so I don't gravitate to it like the others. But its nice enough.