These sort of vocalists are usually found in the Hard Rock/ Heavy metal genre.
Sebastian Bach (Skid Row) - hear him amazing vocal range in "18 and Life" and "Wasted Time"
Eric Adams (Manowar): Their music can be classified as battle metal with constant reference to Odin and glorious death in battle. For those of you who have stereotyped heavy metal as senseless noise, listen to Manowar, and your musical horizon will be considerable widened. Those into classical music of the Wagner variety, will definitely see the influence of Wagner in Manowar music.
R.J. Dio (Rainbow) - Man on the Silver Mountain. He practically growls in this song, but in a pitch which will make Eddie Vedder (of Pearl Jam) sound like Coldplay by comparision.
Rob Halford (Judas Priest): his vocals are an integral part of Priest.
Robert Plant (Led Zeppelin): and who, entering this forum and reading this thread would not have heard of the legendary Robert Plant. Love that part in "Going to California" where he goes
It seems that the wrath of the gods got a punch on the nose
And it's startin' to flow, I think I might be sinkin'
Throw me a line, if I reach it in time
Meet you up there where the path runs straight and high
Don't get me wrong. I'm not the exclusively heavy metal/ hard rock type who hates all other kinds of music. I also love Johnny Cash, Waylon Jennings, Everly Brothers and Skeeter Davis and a host of others who are as far removed from metal as can be.