Beyonce, Christina and Taylor I agree with.
Katy: Mostly, but she's great in Teenage Dream and The One That Got Away.
Selena...
some of the time. Her older songs like Naturally, Off The Chain, A Year Without Rain and Love You Like A Love Song are pretty emotive.
Lana is unique. She is, it's just harder to pick up on.
Ariana's fine, but I understand why some would think so.
Britney...pre-Britney Jean.

But Til It's Gone does make me feel some type of way... It's probably just the way it's edited.