maybe I've seen that list of cleve twin names too many times, but
Phoebe and
Melanie is a tad, oh, transparent? But then again, I'm a namenerd and most people would never know the connection.
So, sure. Twins named
Phoebe and
Melanie would be very nice. They aren't obviously twinny / matchy and I do like both names individually.
How about
Phoebe and
Selene?
Phoebus was the god of the sun (I think) and
Selene has to do with the moon.