Michael Jackson = King of Pop
Elvis Presley = King of Rock
You can't really pick a Queen of pop because there is not really any standout singer. Michael Jackson and Elvis sold many times more than their competitors during their time. Madonna has not really dominated to that level in any period. Another reason you can't consider Madonna the Queen of Pop is because Celine Dion and Mariah Carey have sold more original LPs than Madonna has; much of Madonna's sales come by way of greatest hits albums and such, so she is more of a novelty act for middle aged people (like ACDC and Rolling Stones) than a pop Queen.
Another thing, Madonna was not seen to be the best singer of her time (not even top 10); Whitney Houston was the best singer of the 80's, whereas Michael Jackson was seen as the best male pop singer in his time; and Mariah Carey and Celine Dion in turn were also the best singers of their times; and Mariah's melismatic vocal innovations, as well as her compositional innovations are still used all throughout pop music today, Celine Dion is not a song writer like Mariah or Madonna, but she was bigger than both Madonna and Mariah ever were in the late 90's - having two back to back original LPs selling over 30 million, as well as the Titanic song (which was probably the biggest or second biggest movie song ever (I think Bryan Adams Robin Hood song was bigger according to charts, but I remember Celine Dion's being bigger, and the Titanic soundtrack certainly sold a lot more than the Robin Hood one). The thing is, there has been no female singer who has had the same sort of dominance that Michael Jackson or Elvis had, not even close.
I describe myself as a little dose of toxic masculinity.
