1. Nora(h)
2.
Cora
3.
Flora
I like Nora(h) best because I prefer the N sound over the C or the Fl.
Cora is a close second, but it's not as soft and warm and Nora(h).
Flora is okay, but not a favorite.
I like
Zora and
Thora. Don't have much to say about them, really.