It's sort of a joke style that a ton of people on Tumblr use. For OCs no one complains, but it makes a lot of people mad whenever the artists take pre-existing characters and mess with their weight/skin color/nationality to try to "include everyone", which isn't a bad idea by itself, but you can probably understand why it upsets fans of said fandoms. They usually also tend to make male characters have unhealthily defined curves and incredibly feminine bodies. So really if you want to make a meme or two, I'd recommend this style. and, as you can probably guess by the more toxic side of tumblr, a majority of the original art revolves around feminism and characters wearing pride shirts.
Here's a general example of the tumblr art style, especially one that can upset people.
I'm just getting a little explanation, not hating on anyone at all!
Heyo peeps, just popping in saying that all suggested art styles (well maybe not the joke tumblr style cause I don't wanna offends anyone, and idk how to do it with my OCs) are going to be drawn. I really like the Lavendertowne style.
And here's Another drawing of Kasumi. This time in Tim Burtons style. Even thou I've only done 2 drawings so far, this one might be my fav. I even added some shading beneath the eyes to create the 'bags under eyes' effect.
I understand this isn't the answer to the question you were asking - but I don't think this is a good method to seek improvement. I really see a lot of young artists get hung up on the word 'style' .... it's not style that you're looking for, it's technical skill. I think your time would be better spent studying technical art skills than just trying to emulate. I recommend 'drawing on the right side of the brain' as a good introduction to improving and moving away from 'symbol' based drawing - which is what this excercise is enforcing, reproduction of rote symbols, not an actual understanding of any subject matter you could ever find yourself wanting to draw.
I'm sorry this isn't what you asked for, I just see a lot of artists waste years like this, only to finally see rapid improvement when they study instead of replication alone. I guess what I'm saying is, stylistic art is at it's best when the artist knows the rules and how exactly to break them.
Instead of a style, I suggest take pictures of your hands in various poses, and then try draw your hands from the references you've taken, blocking out the mass of the hands to learn how they move in different conditions.