Phew, I just read the entire thread and it took quite some time even though I've heard most of the stuff.
Needless to say most of what I like has already been mentioned at least a few times but there were some nice new findings for me.
One voice I really like is that of Susan Calloway, who isn't particularly well-know aside from probably the Final Fantasy fans as she did the theme song for it. She's kinda going under the radar but supposedly is working on a new album right now.
I'm also a big fan of Ally Rhodes' voice, who has made a ton of covers on youtube but she also has 2 original albums and I'm proud that I contributed on kickstarter for her second one.
I'm also kinda following the boring music shows like x factor and the voice just to find out new artists to like and I was pretty impressed with Sarah Simmons and her voice
I'll definitely be waiting for her to release something original.