Most of the stuff my son listens to has harsh vocals. I have heard so much of it from him that it has broken me down. It's a matter of exposure and incremental tolerance.
He started off with Lamb of God. And initially I was put off, but then the more he exposed me to other vocalists, Randy seemed almost tame in comparison (which is saying a lot).
That stated, I do have a threshold. If I am going to be interested, there typically has to be something else about the song, band, or music in general that is redeeming. Or even the individual personality of the singer. It also helps of course when they do EXCELLENT clean vocals as well.
Some of my favorites:
- Tatiana Shmayluk. As DoctorAction mentioned, the versatility. Her YT reaction videos are already the stuff of legends. It's how SEAMLESSLY she can enter and exit all the vocal styles she pulls off. The growling is SO contrasted with her incredible cleans, that it definitely takes you aback like no other vocalist, male or female. Also, the rest of the Jinjer band is amazing.
- Alissa White-Gluz. Keeping with the ladies, she was Tatiana before Tatiana. Just not quite on that level. But a similar shock. Both ladies are very attractive too....which adds to the depth of the contrast, as it were. Besides that, she plays with Jeff freaking Loomis! And, personal bias.....I was there at the Nightwish "Debacle" in Denver when she and Elize Ryd filled in for Anette Olzon. I was just a few feet away, and her stage presence....like Tatiana's.....is, shall we say, palpable.
- Michael Akerfeldt. Opeth is so great/interesting as a band, and the cleans are so good, that it's easy to have him on the list.
- Randy Blythe. Still pretty much sounds the same after all these years. I say that as a compliment. For doing as many live shows as they have done with him singing like that, it's impressive. Lamb of God is a great band too.
- Jake Superchi. From the black metal band UADA. He can do VERY low death growls to high pitched screaming. My affinity for him is based primarily on one of my favorite YT videos, Cult of a Dying Sun. They filmed it in a remote area of Washington state near Mt. St. Helens. That environment SO adds to the mood/impact of the song.
Wondering if you could also add vocalists who walk the line of what we would define as harsh by today's standards? Especially those not typically known for such. Like Russell Allen, for example. He tinkered with more aggressive vocals on certain parts of The Odyssey album, and then went almost all that direction on Paradise Lost. The change was in no small part to match the sound of the music/tenor of the album, but was rather off putting for a lot of hardcore Symphony X fans.