I voted for Jotaro last round.
Mihawk takes the cake for me here though, his design is very clean, a reflection of his personality and fighting style (to cut cleanly and efficiently). It's very tide, everything is clean, sharp, and symmetrical. In a verse where everyone looks like they havent showered in years, Mihawk looks like he smells like expensive cologne.
Oda has some of the most expressive character designs, with one glance you can tell what type of personality, or what kind of fighter a character is.
Geralt is great but his getup doesn't stand out much from other witchers tbh. It's not really popping.
Guts is also great, but I prefer Mihawk's colour scheme. It's hard to miss when he's on screen compared to Guts who blends in more with the background.