NEW JACK SWING: It fuses the rhythms, samples and production techniques of hip-hop and dance-pop with the urban contemporary sound of R&B.
I find Superfly Sister to have a New Jack Swing vibe!! But to be 100% honest I never really thought of New Jack Swing as a true "labeled' music style because it is a mixture of a few styles.. and MJ has been doing that before "new Jack" has been out!! Plus for example R&B is a mixture of RHYTHM and BLUES, hip hop is derived from the same roots as motown.. Dance pop is a mixture of motown derived sounds with some Europeanized enfluences.. almost all music we hear now is a mixture of several styles..
what has been the last straight out RAP song you've heard?? No pop mixed into it?? Or whens the last time you've heard an R&B song that did not fall into the Pop charts because it has a Dance-Pop feel.. etc.. its all just sounds now, there is not much seperation like it used to.. at least in popular music that hits mainstream