This art style reminds me of early digital art, when "rules" hadn't been set yet and everyone just tried to figure out how to use Photoshop. It's pretty niche, I hadn't seen anything like this in a long time. I don't think it has a name.
There are lots of digital art styles that have no names because it's a relatively new medium. This especially applies to pixel art styles, since most people just call it, well, pixel art. This seems to be a mix between pixel art and digital painting, which makes it really interesting.
If you're asking what we'd call this, I suggest "alpha digital". "Alpha" because, like the early stages of testing in a video game, everyone was still trying to figure out what this new medium was about. Does that make sense?