A large part of deviantart.com would fit that description. There are also a lot of cartoony or CG images in communities dedicated to fanart. Another component in there is probably the overly polished and clean look of stock images, like the front page results of shutterstock.
"Typical" AI images are this blend of the popular image styles of the internet. You always have a bit of digital drawing + cartoon image + oversaturated stock image + 3d render mixed in. Models trained on just one of these work quite well, but for a generalist model this blend of styles is an issue
> There are also a lot of cartoony or CG images in communities dedicated to fanart.
Asian artists don't color this way though; those neon oversaturated colors are a Western style.
(This is one of the easiest ways to tell a fake-anime western TV show, the colors are bad. The other way is that action scenes don't have any impact because they aren't any good at planning them.)
"Typical" AI images are this blend of the popular image styles of the internet. You always have a bit of digital drawing + cartoon image + oversaturated stock image + 3d render mixed in. Models trained on just one of these work quite well, but for a generalist model this blend of styles is an issue