Interesting findings.
To be honest I don't like that Nymph(a) part at all.
But let's play:
Nymphaea
CassandraNymphaea
Callisto+
Melissa &
Jason
And I do agree
Niloufar is prettier that Nenuphar. At first I assumed that Nenuphar is masculine, but, apparently, it's feminine.
I'd definitely shorten it to Nuphar in everyday life))
Nenuphar
OdeliaNenuphar
Soraia+ Ophira &
Tadeo