Interest Stacks

This list was created off people's answers from multiple Reddit and MyAnimelist forums about the best artstyle in manga.

Honorable mentions (these are either really short mangas, mangas with similar artstyle to another that's already on this list, or another medium outright):

-JoJo's Bizarre Adventure Part 8: Jojolion
-Tomie
-Slam Dunk (author of Real)
-Magic Knight Rayearth (author of X)
-Solanin
-xxxHOLiC (author of X)
-Uzumaki
-Ultra Heaven
-Biomega (author of Blame!)
-Feng Shen Ji (manhua)
-Platinum End (author of Death Note)
-Hideout