I guess I'm a glutton for punishment because y'all have given me a mountain of recommendations for Anime/Manga to check out and having insomnia helps to get extra reading/watching tv time. I enjoy having so many shows to watch and mangas to read but I was wondering if anyone could recommend any that are western themed or were inspired by westerns. I guess something like 7 Samurai would work since that inspired Magnificent 7.
Also, so far it seems like anime/manga fans do the best job at gatekeeping. I say this because I see the most pushback against whiners about representation or "sexualization". I frequently see feminists hacks whining about pushback amongst amine fans when they want to have a discussion about the male gaze or something. I've reached the point to where I think anyone bringing up such topics should be weeded out immediately because they are poison for fandoms. As I always say, imagine how gaming would be if Zoe Quinn or Anita Sarekessian had been told to pound sand from day one.
Have you considered some older historical manga? Vinland Saga is a more famous recent one, but I'd like to throw some different suggestions:
Green Blood: From 2011. Since you said you're interested in Westerns, IIRC this one's story starts in post-Civil War NYC, but eventually moves out to the frontier. It is a seinen clearly inspired by Gangs of New York, so you can certainly expect blood & other mature content in its pages.
Kingdom: From 2006. Centers on the unification of China by Qin Shi Huang, who is of course a major character. IIRC this is the biggest bestseller among historical-fiction manga and one of the bestselling manga of all time period, beating Vinland Saga by a whopping 90 million copies sold - I'm always surprised that it isn't as well-known in the West as I would've thought it would be on account of that.
Wolfsmund: From 2009. A seinen manga centered on William Tell and the first great Swiss uprising against the Habsburgs in the early 14th century. The author was a student of Kentaro Miura's and it shows in the art & grim themes, most certainly including by way of the Berserk-esque medieval brutality depicted.
The Rose of Versailles: From 1972. Ancient, as you might guess, and it's actually classified as a shoujo manga, but that in no way means it's not good. Centers on the years leading up to & the earliest stages of the French Revolution. Despite being from the '70s, long before historical revisionism & rehabilitation of Louis XVI and Marie Antoinette's reputations got going, it shows the royals in an actually reasonable, even leaning-positive light and doesn't portray most of the other nobles as cartoon villains either (unsurprising, because main character Oscar Francois de Jarjayes is one). The author actually won France's Legion of Honor award for her attention to historical accuracy.
And two more recommendations based on famous works of fiction from other countries...
The Heroic Legend of Arslan: From 2013. A manga adaptation of a novel series of the same name (the latter having been illustrated by Yoshitaka Amano, who was also the chief artist on most of the Final Fantasy games from I up to X), based on a Persian legend and set in a low-fantasy world clearly based off of the Middle East. The author was also the creator of Fullmetal Alchemist and she hasn't lost her touch with this one.
Lupin the Third: From 1967. Must be quite a few ouiaboos in the ranks of the mangaka from that time period, because like Rose of Versailles this one was also based in something from France - this time, the Arsène Lupin stories. Follows the various misadventures of that guy's grandson and his gang as they carry out seemingly impossible heists.
Vinland Saga sounds awesome! Thanks for all of it
If you feel the urge to jump from Manga to Anime, the second season of Vinland Saga is currently airing. It's a good time to make the jump!
Where is it airing?
I'm sailing the high seas, myself. As good as anime is, localizers are cancerous middlemen whom I refuse to support.