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Pokemon tend to have more simple designs to look at, with a small amount of colors, easy to identify body parts, and unique in a way where you haven't seen them anywhere before.
I think this is intentional as a well to make them simple to draw, make merch, and remember how they look.
< -- Like this you'd never expect to see in pokemon because it harder on the eyes to identify everything you're looking at, if you stared at this card for 6 months you still probably couldn't draw it without missing several details compared to say, drawing giratina where its easier to remember his markings.