Frank Kogan

Wow! That's an interesting style(s). This is where my lack of music theory is a real handicap. No those melodies are not freestyle, but my adjectival description of freestyle — "sad, but upbeat!" — sorta fits those, too. There seems to be a show-music element in some of them that isn't in freestyle.

Anyway, where description fails, maybe links can help. Some classic American freestyle, '80s to early '90s:

New York:

Cover Girls "Inside Outside"

Judy Torres "Come Into My Arms"

Cynthia "Change On Me"

Lisette Melendez "A Day In My Life (Without You)"

Miami

Debbie Deb "When I Hear Music"

Sequal "It's Not Too Late"

Company B "Fascinated"