A lot of times, especially lately, if someone comes up with a suggestion once or twice then suddenly they're a full blown ghost writer who was key to the whole track.
Diddy had money and connections that could get some of the best rappers to ghost write his shyt.
Not to mention he had Big (until he died), Ma$e, Jadakiss, and Black Rob under his own umbrella.
Kim was even more of a constructed concept and image than Biggie's Big Poppa Frank White persona.
She was this raunchy ride or die sexpot with a dirty mouth who talks taboo. She was there for the look, the attitude, and because she pretty much served that role in Biggie's life.
I'm not buying she ever served as an actual writer.
Also, considering how long he's been in the industry, Diddy does not really have a large body of work. How many fukking ghost writers does he need?