Anime

Out of all the manhwa (mostly action) I've been casually reading, I've been most impressed by "Martial Wild West/Wild West Murim". It's an isekai where the Han dynasty was the first entity to colonize the United States, but apart from like the first chapter, there's barely any narrative focus on the reincarnation aspect of the MC, much more focus on what a Han-dynasty-colonized-western-US looks like and how it's structured, its connection to the mainland, and of course, martial arts. Has an interesting arc some chapters in about how indigenous Americans interact with the Han settlers. And the art is outstanding imo, a departure from the more anime-esque aesthetic other action manhwas I've read use. Reminded me quite a bit of Kenshi, though maybe I'm leaning too much into that comparison given that they both share desert environments and martial arts.

Otherwise a fan of:

How to Use a Returner/Regressor Instruction Manual

The Skeleton Soldier Failed to Defend the Dungeon/Skeleton Soldier Couldn't Protect the Dungeon

I Became the Tyrant of a Defense Game

Manhuas:

Nan Hao & Sheng Feng

Eternal Club/I Built a Lifespan Club (plot goes absurd once the MC starts to go international with his operations imo)

Tamen de Gushi/Their Story (RIP to this cute lesbian love story)

Legend of Star General

Release That Witch (think someone once described this as 'fantasy Dengism'?)

Iron Ladies/Metal Goddess Soldier (in which I think this was written from a Chinese nationalist perspective and the antagonists are like, pretty blatantly a NATO/American empire analogy, and they get their shit violently wrecked)