Beauty, in terms of facial beauty, comes not from the various shades of brown skin tone. But of facial symmetry. The more symmetrical the face the prettier it is. She is a beautiful woman, but lack the "ideal" oval shaped face, she has a slightly masculine chin.
One could say that Monica Belucci, Shakira, Halle Berry, are prettier or go back to the old school and pick Liz Taylor, Dorothy Dandridge, Lena Horne, a Italian woman whose name escapes me (she basically is unaging)...all those women have very symmetrical faces...arched eyebrows, high cheekbones, oval faces and fullish lips...hall marks of feminine Beauty...Hell even Nefertiti could be said to be prettier as well.
Half the women you named i would call average, Halle Berry, Shakira.....it's all subjective. Elisha has an ovular face, i would put her in the very pretty range put it that way.