I really love
Joy. It's so sweet and cheerful! I really like it as a mn. It's sort of a filler, but it's less common than
Grace,
Marie, or
Rose.
I think that
Joy Anna would make a nice combo, but I don't really care for it as a double fn. It sounds like someone is mispronouncing
Joanna. Joyanna looks weird to me too.
I do know a few Joys, particularly a good friend of mine. I think that her full name is
Joy Danielle, but I'm not positive on that...