Data Insight
Will Smith writes his own raps (the hip-hop standard) and is credited as a lyricist on essentially all his solo material, but his composer credits balloon because his hits are built on prominent samples and interpolations, pulling in the original songwriters as co-composers. The result is a high lyricist score paired with a crowded composer list dominated by sampled-song authors and his producers (notably Poke & Tone of Trackmasters). His catalog is a clear example of authorship in sample-based pop-rap.