I like
Jane,
Alex as a nn for
Alexander,
Elizabeth and
May rather than
Mae. But none of the names would stand out in a crowd, which is refreshing.
If I had quintuplets, I'd keep very quiet about it for as long as I could - it would be dreadful to have the whole planet aware that there were five and then (as can easily happen with the premature and the tiny) have to cope with a really public fatality.