Unfortunately it would be a pretty big list, since more than 25% of all artworks aren’t released outside of Japan tbh. There have been some threads about cards exclusively released in non-English AND non-Japanese, for which the list is a lot smaller, like this thread or this one.
Out of curiosity, what is the reason you ask this question? Are you looking for all Japanese-exclusive artworks of one or two Pokémon in particular? If we could pinpoint it to a certain sub-category of Japanese-exclusive artworks, it would be easier to help or create such a list. I sometimes make lists of all cards (in all languages) for a certain Pokémon, so all Japanese exclusive cards of a certain Pokémon shouldn’t take long to compile in comparison. 
Greetz,
Quuador