Pokémon main series human character list

Does anyone know where I can go find a list of human characters from the Pokémon main series, please? All these human characters can include:

• All the ones in the overworld screen.
• All the ones in the Pokémon battle screen.
• All the ones from all the Pokémon main series video games.
• All the kinds of Trainer classes.

Say, I just want to divide all human characters in all Pokémon regions of origins from the Pokémon main series video games. Thank you. ;)

Go to Bulbapedia and type "Trainer" in the search bar. It brings you to a generic post about Pokemon Trainers and at the very bottom it lists every type of Trainer Class in every game. For core characters like Scott, Oak, and people like that I think you can find them the very same way.

What are "core characters" you're talking about?