Marina and the Diamonds
Florence + the Machine
Evanescence (If we don't count this one getting released on vinyl)
Ke$ha (Last album was weak, but not bad)
The Neighbourhood
Paramore
2NE1
Lots of others I love, but most a have a general dud.
Lady GaGa (That jazz album mess)
Adele (Her first album wasn't great imo)
Ariana Grande (She started young, and that album was a diwnfall)
Lana Del Rey (Honeymoon was cringe worthy

)
Sia (first album was terrible)
And a lot of people only have one album, so I didn't include those.