you know how some acts get writing and/or producing credits by agreement w/o actually putting in work. the credits are given for various reasons. like George Clinton gave a writing credit on 'Not Just Knee Deep' to his son as a gift (hint: his son was like 10 yrs old when the song was released).
i think Kanye is either trolling us w/those credits or gave them to several of those folks for some reason other than the fact that they actually contributed to the writing or producing on the recording.