I can't find another female vocalist half as good as Ann Wilson of Heart (Early Years). I've looked high and low and there is just no one out there with those details. We really need a good ol' fashioned revival of the great bands of the 70's. Most stuff these days just misses the mark. Some good stuff out there but not even close to the chops Ann had/has.
Huge Heart fan here. (I saw them live a couple times in the late 70s and did my teenage boy heart break being at the front of the stage, looking up at Nancy Wilson!).
Anne is certainly one of the Titans in terms of female pop or rock vocalists.
But look into some of Linda Ronstadts recordings and live performance. She is astounding. And in many of the similar ways that Anne his incredible : fabulous vocal control, can sing like an angel at whisper levels but belt it out with the best just like Anne.
I always really liked Nancy’s voice as well, although it was much more delicate.
In terms of singing skill, individuality, and sheer natural talent. I would certainly put Karen Carpenter up in the top rank. Though she never really sang with the power you get from a rocker like Anne.
Since we’re talking about the 70’s, as it happens over the past several years, I’ve become smitten with who has become my favourite female singer at this point:
Agnetha Faltskog of ABBA (“the blonde”).
She was possessed of an incredibly pure, musical, bell-like tone, and she could sing the most delicate parts with a disarming sincerity, and also hit power notes like a Diva when required. But with none of the horrible show offy melisma that came to infect female singing for quite a while. She always just sang musically, just with the lyrics needed and no more. And if you start to delve in to the ABBA production, you find that both women produced an astounding variety and range in their vocals.