I don't think anyone's mentioned a minor/Major seventh (mM7 or miMa7) yet. This is a Ma7 note added to a minor chord. 3X433X would be a GmM7. Although I don't find a lot of use for it, it does work well going from a Gmi(3X533X)to a Gmi7(3X333X) followed by a Gdim(3X232X)