All time questions are impossible to answer, unless the end of time is so close that this doesn't matter anyway.
Where are the men on the list, are you suggesting that there or no men worthy of the title; that's a bit sexist, isn't it?
These three wailing women are, all three, very low in the list.
Try Joan Sutherland, Mahalia Jackson, Pavarotti...they and many others, male and female, knock your three out of the playing field. How about Joan Baez with a full range voice?
Ah, congratulations, my wife has just come in and I asked her if she had any input on your question, she was speechless, this is an unknown event for me.