From what I saw on this site, Guttural Growler seems to have a confusing definition. It is often stated to be "character has a low, raspy voice", which isn't exactly a trope and would fit much better on things like Evil Sounds Raspy (raspy voices signifying evil characters) or Tomboyish Voice (a girl with a raspy voice to signify her as a tomboy). So I think a wick check is in order.

Here's the check (with organizing help from Yindee) and the results:

• Gruff/Raspy voice with some context (10/50)
• Chairs (22/50)
• ZCE (14/50)
• Unsure (4/50)

• Create a trope where a raspy is voice is used to symbolize the character being tough. Make a male-centric example to a "Tough guy with raspy voice" example and move female examples to Tomboyish Voice. If not, we can create a unisex trope about the general "raspy=tough" idea. (though that might also need a seperate wick check for TV).
• Rename and redefine the trope (in-line with the first solution)

1. Characters.Condemned Criminal Origins (Director Ike Ferrel) /Guttural Growler: While he sounds perfectly normal in the first game, the second game has him speaking in a very harsh and gravelly voice. The metal implants in his body may have something to do with it. has some context
2. Characters.Dishonored Daud And Billie Lurk (Daud) /Guttural Growler: Regardless of your chaos level his voice will always be deep and raspy which does help his intimidating presence. Gruff/Raspy voice with some context
3. Characters.Dragon Calling Antagonists And Villains (Sadukravon) /Guttural Growler: Being a manticor, he often rumbles and growls in what one would imagine a lion-like manner. has some context
4. Characters.Fire Emblem Three Houses Dimitri /Guttural Growler: Post-timeskip on the Azure Moon and Verdant Wind routes, Dimitri has a deeper, more aggressive voice and growls nearly every line he speaks. On the Azure Moon route, after he realizes what kind of person he's become and takes a turn for the better, his voice softens a little, though he still growls at his enemies in battle. has some context
5. Characters.Five Nights At Freddys William Afton (Scraptrap) /Guttural Growler: He speaks with a creepy, growling voice. Seeing as Afton spoke more clearly in the opening to Sister Location, it's fair to say that decades trapped in a rotting suit didn't do his vocal cords any good. has some context
6. Characters.Malus Darkblade (Malus' Family/Isilvar) /Guttural Growler: He has a low, rasping voice, the result of Malus stabbing him in the throat when the Cult of Slaanesh's hideout was raided by Khainite warriors. has some context
7. Characters.The Righteous Gemstones Other Characters (The Devil) /Guttural Growler: This is actually a plot point. Scotty has a low, scary voice but he lowers it even further into a harsh snarl to disguise his identity when blackmailing Jesse. has some context
8. Characters.Spec Ops The Line (Walker) /Guttural Growler: As the campaign goes on and Walker continues losing his mind, his combat barks become more feral and psychotic and he starts straight growling, throat tearing and all, a lot more. has some context
9. Characters.Star Wars The Mandalorian Character Sheet /Guttural Growler: He speaks with a tough-sounding rasp. It usually seems due to his helmet distorting his voice, but he still sounds hoarse even without it. has some context
10. Characters.Uncut Gems (Phil & Nico) /Guttural Growler: Phil has a deep and raspy voice^* As it turns out, this is partially the result of his actor recovering from surgery for throat cancer during filming. has some context, but it's kinds written as natter

1. Characters.Bloodborne Secondary Characters (Valtr) /Guttural Growler: He has a very deep, guttural voice, unlike Solaire. chairs
2. Characters.Critical Role Darrington Brigade (Buddy) /Guttural Growler: Liam plays him with a very deep, gravelly voice. chairs
3. Characters.Dark Souls II Secondary Characters (Benhart of Jugo) /Guttural Growler: Speaks with a deep, gravelly voice: his heavy Scottish accent only makes it more recognizable. chairs
4. Characters.DCEU General Zod /Guttural Growler: Zod normally has an even-toned voice, but when he's feeling aggressive his voice will suddenly become noticably coarse. chairs
5. Characters.The Despair In Our Stars (Female Students/Natsuki Sumeragi) /Guttural Growler: Her actual voice is rather low, especially for a girl. chairs
6. Characters.El Cid 2020 Kingdom Of Leon (King Fernando I of León) /Guttural Growler: Has an impressively growling voice when speaking. chairs
7. Characters.Escape From New York (Snake Plissken) /Guttural Growler: His voice is raspy and hoarse. Kurt Russell said he inspired it by Clint Eastwood. chairs
8. Characters.Genshin Impact Zhongli /Guttural Growler: His grunts and combat voicelines make him come across as this, though in English Keith Silverstein gives him an even more noticeable growl. chairs
9. Characters.Grandmaster Of Demonic Cultivation Mo Dao Zu Shi Nie Clan Of Qinghe (Nie Mingjue) /Guttural Growler: In the Japanese audio drama, kudos of his voice actor Kenjiro Tsuda, Nie Mingjue had a deep and raspy voice. chairs
10. Characters.Immortals Fenyx Rising (Ares) /Guttural Growler: Even as a chicken, he talks in a booming, raspy voice. chairs
11. Characters.The Land Before Time Sequel Films (Archie) /Guttural Growler: His first scene has him growling at an isolated Littlefoot in a way that makes him look like a threat, but he quickly mellows out once he sees that Littlefoot is just a lost kid and not a Sharptooth. seems like chairs
12. Characters.Little Miss Sunshine (Secondary Characters/The Biker Dad) /Guttural Growler: Has a very raspy voice. chairs
13. Characters.The Man In The High Castle Series Resistance (Gary) /Guttural Growler: He speaks with a low, raspy voice. chairs
14. Characters.Masters Of The Universe The Evil Horde (Hordak) /Guttural Growler: In the 1980s She-Ra cartoon, Hordak has a raspy, abrasive voice. chairs
15. Characters.Mortal Kombat 2021 (Scorpion) /Guttural Growler: As Scorpion, Hanzo's voice takes on a harsh, gravelly quality, especially evident in his iconic "GET OVER HERE!". chairs
16. Characters.Popeye (Popeye The Sailor) /Guttural Growler: Has a low, gruff voice. chairs
17. Characters.Regular Show Main Characters ( Muscle Man) /Guttural Growler: Has an exaggeratedly deep, growling voice, in contrast with the light, high voice of Pops and the more monotonous, slightly nasal tone of Benson (all performed by Sam Marin). chairs
18. Characters.Saints Row The Third Street Saints (Oleg Kirlov) /Guttural Growler: He has a distinct gravelly voice. chairs
19. Characters.A Song Of Ice And Fire Essos The Dothraki (General) /Guttural Growler: The Dothraki language is described as rough and harsh-sounding. chairs
20. Characters.Star Wars Zygerria (Darts D'Nar) /Guttural Growler: He snarls and growls like an animal when he speaks. chairs
21. Characters.Still Waters 1 (American Division Agents/Max Linell) Guttural Growler: His voice is deep and very rough sounding. chairs
22. Characters.Zeno Clash (Playable Charactrs/Ghat) /Guttural Growler: Has a very harsh, yet actually somewhat quiet voice. Unless he's yelling, then he loses the rasp. chairs

1. Characters.Arrowverse Hunter Zolomon /Guttural Growler: His disguised voice is even deeper and more demonic than the Reverse-Flash's voice. zce
2. Characters.Batman Arkham Series Gotham Citizens (Alberto Falcone) /Guttural Growler: When he makes a threatening phone call to Roman Sionis in what sounds like his Holiday Killer persona. ZCE
3. Characters.Citadel Of The Heart Digimon Re Tamers (Protagonists (canon)|Impmon) /Guttural Growler: How his Beelzemon form maintains his Badass Baritone of a fully evolved Digimon, due to the fact the English Dub of the original series had him constantly slip into his Impmon voice due to how rarely calm he was. ZCE
4. Characters.Dragon Ball Tournament Characters (Giran) /Guttural Growler: He normally speaks in a deep growl. zce
5. Characters.Final Fantasy Type 0 ( Marshal Cid Aulstyne) /Guttural Growler: His voice has a decent edge to it. zce
6. Characters.Halo The Banished (Atriox) /Guttural Growler: Most noticeably when speaking in gameplay. zce
7. Characters.Highlander (Connor MacLeod) /Guttural Growler: Part of his unique accent is a raspy intonation. zce
8. Characters.I Am Alive (The Protagonist) /Guttural Growler: Not too deep but deep enough to sound like nails. zce
9. Characters.Jade Empire (The Black Whirlwind) /Guttural Growler: He speaks with a growling baritone. zce
10. Characters.Metal Gear Big Boss /Guttural Growler: Like father, like son. zce
11. Characters.Oz Homeboys (Omar) /Guttural Growler: He has a very gravelly voice. zce
12. Characters.Play Station All Stars Battle Royale Third Party And DLC (Raiden)/ Gutteral Growler zce
13. Characters.Spider Man Shattered Dimensions (The Goblin) /Guttural Growler: Less so as a human, but his monster form ramps it up considerably. zce
14. Characters.Syrellia (Recurring Characters/ A'idhul Rahman) /Guttural Growler: Remarked on a lot, as his voice is completely different from everyone else's. He knows it creeps people out. zce

1. Characters.ERB Season 3 (Blackbeard) /Guttural Growler: He doesn't talk as much as he roars in the form of words. unsure
2. Characters.Godzilla The Godzillas (Heisei Godzilla) /Guttural Growler: From 1984 to 1991, this Godzilla had a deeper, aggressive roar more akin to that of the original Godzilla, complete with ferocious growling sounds and snarls. Unsure
3. Characters.Soul Eater Troubled Souls Project Omega (Primordial Form) /Guttural Growler: All it does is rasp and roar. It precedes the First Form, so it’s even more primitive than that prototype, despite being implied to possess more power. Unsure
4. Characters.Yakuza 0 Sotenbori Residents (Wen Hai Lee) /Guttural Growler: His huge, muscular build is well-complemented by a coarse, gruff voice. unsure