Mark Lanegan.
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+852,961.
Fukkin' A Right, Mark Lanegan!
Dude can growl the paint off a wall. Nasty throwback blues, mixed genres, even some music that sounds like it comes from a badass old school western movie (pendulum, below)
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"Whiskey for the Holy Ghost" is a top 5 all time album, any genre, for me. Pure badassery, start to finish. Great sound, good variety, emotionally both mixed and complex, and (obviously) the single best album name ever. Some of them (like Carnival, Pendulum, and El Sol) are easy to access and can hook you. Others (like House a Home and Night Train) can take several listens. But there isn't a toss-in song in the bunch.
The best review that I saw for that album used the line (paraphrased): "Despite the different people appearing on different songs, it sounds like it was recorded in a single sitting, and Mark started 'The River Rise' with a full bottle of whiskey, and ended after 'Night Train' with an empty one. And then he crawled inside of it."
More generally speaking, I'm biased towards basses and baritones, so my list will look very different than most others.