This is weird, and I can't explain it. I like
Joe very much indeed as a nn for a boy -
Joel or
Joseph. I dislike
Joey in every shape or form. And in spite of
Louisa May Alcott's best endeavours, I really cannot warm up to
Jo for a girl. Or, indeed, to
Joe for a girl.
Josephine is quite nice, but I like Joseph/Joel too much to consider using it.
Josepha is just alien to me. I love
Joanna, like
Joan a lot and can't stand
Joanne. And what puts me off
Joanna is the very real possibility of
Jo as a nn! Which it routinely is for
Joanne, of course.