Spotify created a playlist "This is Kumi Koda"
https://open.spotify.com/user/spotif...1DZ06evO1lN1pB Its a very good mix of fan favorites and some other songs like Ienai yo. But it doesn't have Crazy 4 U, so it's not perfect.
Btw, I don't remember ever seeing NEVER ENOUGH being called as a "grand ballad" at all.