Falling, Try Sleeping With a Broken Heart, A Woman's Worth, You Don't Know My Name, If I Ain't Got You, No One, Empire State of Mind (Part II) Broken Down, Like You'll Never See Me Again, Doesn't Mean Anything, My Boo, Un-Thinkable (I'm Ready)
None of these girls have even done a ballad that's as close as being as iconic as Hero (except for beautiful maybe) So i vote mariah and then christina