Mariah released her first album in 1990, so I can see that, but she's consistently released material alongside Erykah's years
Mary 411 (92); My Life (94); Share My World (97)
Baduizm (97)
Who is Jill (00)
Destiny's Child (98) / Dangerously In Love (03)
I mean, who are her contemporaries if not them
also Erykah is the only one of them I know that this happens with: a woman who listen to Mariah, Bey, or mainstream R&B still listens to Erykah, if they are the type that doesn't really fuck with R&B like that they more than likely listen to Erykah.