[@Crimson Flame][@Emeth][@Silver Carrot]

There might be options on ArtStation. They have different sections, but I've linked [i]Anime & Manga[/i] and [i]Character Design[/i] here. In the lower right corner of the site, you've got a little tool for choosing 2d/3d and other settings.

https://www.artstation.com/channels/anime_manga?sort_by=trending&dimension=2d
https://www.artstation.com/channels/character_design?sort_by=trending&dimension=2d