I dont have the liner notes in front of me, but I remember Voodoo and Bird, both of whom were in Western Hemisfear before they broke up did the bulk of the production. Diamond D wasnt on the album, that track was a remix. Ras, if I remember correctly might have co-produced a track or two, which usually means he had creative input on the beat or found the sample, nothing technical.
I remember reading an interview when the album dropped of Ras explaining that "If.....then" was an example of people not realizing the creative process of his music cuz they intentionally flipped the beat some type of way that makes it sound off beat but mesh with the lyrics and how the song could never be remixed as a result because the vocals would be off.