There are disputes as to whether some rappers are mumble rappers or not. There is also conflation between mumble/SoundCloud rap and other new generation-led evolutions or niches such as trap and cloud rap. The Cleveland Plain Dealer's Troy L. Smith writes that 21 Savage unfairly gets classified as a mumble rapper. SoundCloud rap scene
On June 16, 2020, J. Cole released his first song of 2020, "Snow on tha Bluff", a politically-charged track released soon after the murder of George Floyd that led to disagreements with and criticism from Noname and other rappers.