I reall y like
Dorothy, but my favorite nn's for it are
Dora and Dorie. I prefer
Dorothea over
Dorothy, however. Not a big fan of
Dot and
Dottie but they're not bad, I really, really dislike
Dolly, though. No disrespect to Miss Parton, but I just can't stand it (though I'd definitely rather see it as a nn than a formal name).