I'm only ranking the main ones. And these are of course my opinions.
  1. Rose Tyler
    Giphy
    The Bad Wolf
  2. Donna Noble
    Giphy
    The Doctor Donna
  3. Clara Oswald
    Giphy
    The Impossible Girl
  4. Rory Williams
    Giphy
    The Last Centurian
  5. Amy Pond
    Giphy
    The Girl Who Waited
  6. Martha Jones
    Giphy
    The Girl Who Walked the Earth