I like
Morgan, but strictly for males, like my Welsh great-great-grandfather!
Morgana is heavy and clumsy. But
Celeste is the reverse: flimsy and fluffy and over-ambitious. I'd rather use
Angela.
I've only known one
Celeste: she hated her name, found it revoltingly sentimental, and insisted on being called
Sally. Which I do like and might use.