what are common pokemon used in modeling?

Practically all of them, anonymous. The modeling industry consist of highly creative individuals, and many agencies emphasize the idea that quite literally anyone and anything can be a model. It’s admirably progressive, in my opinion. Especially considering the fact that I never would have been able to conceptualize using a muk as a model, yet one of our most famous pokémon models is a Kantonian muk named Fragrance.