Ideas needed for binder page for cards that link together

I am trying to make a binder page of cards that link together. These are what I have so far.

I think I will need to get another Durant to complete the train which, which would mean the the top left and and centre pockets will be free.

Are there any cards that link together diagonally, but the opposite way to Milotic and Feebas? Or would a different orientation work better?