Is Adele a R&B artist?
You can say Adele can also be categorized under Soul, Blue-Eyed Soul, or R&B. Adele herself called one of her singles genre ‘dark bluesy gospel disco tune’. She got part of her R&B inspiration from Etta James, Lauryn Hill, and Alicia Keys.
https://www.youtube.com/watch?v=HLj7d5LL_SI