How Popular R&B Hip-Hop Singers Are?

Hip-hop has impacted a few kinds of music. R&B, specifically, was the most impacted as to require a subgenre.
The key contrast was that the subgenre was coarse and contained less of an R&B impact.
Pop and R&B vocalists, including Mariah Carey and Destiny's Child, appropriated hip-hop to identify with more youthful, metropolitan crowds, accordingly making a sub-genre begat "hip-hop Soul".