>>38574424See pic related.
I can oversimplify too. I could say "Kanto is literally a square!".
Also
>thinking the outward shape of the region matters more than the layout of the individual dungeons within the regionKanto to Kalos are all fine. Alola dropped the ball by making every dungeon a straight line except Haina Desert, Shady House, Vast Poni Canyon and Team Rocket's Castle.