I disagree, to be in the vocal trinity impact is a factor. Otherwise you could just include any random church singer who no1kurrs about.
Demi is underrated, but she's also annoying and her songs
The 3 artists that first come to mind for me are Ariana, Beyonce and Christina,
but Beyonce and Christina debuted in the late 90's, and Ariana was the early 10's... I mean I don't know if "this g
Adele and Ariana are definitely two of them. The third is sort of a toss-up. I'd maybe say Beyonce but I kinda think she is in a different vocal trinity generation.
Literally everyone, girl. Ma