I initially called this “comic styling” or “sketched” but in doing a little more research, lining an all white mini in heavy black ink is more akin to what a comic book inker would do. This process in comic books is the final stage before the colorist and letterer finish the comic book proper. The inker would clean up the original artist’s pencil lines and decide on balance with the final black lining. There is a lot more art to it than simple tracing (as Chasing Amy would argue).
I’m no artist so I’m basically tracing but I’ll try to achieve a higher calling and call it “inking.” After having my first attempt sitting on my desk, I couldn’t stop checking it out so I’ve decided to go full bore and Ink all of Mantic’s Here’s Negan Walking Dead board game.