There's a very small different between the Japanese and Western versions of Pokemon Let’s GO Pikachu/Eevee. The top screen is from the English version, while the bottom screen is from the Japanese version. You might notice that the roof of one of the buildings is a differetn color in each version. This appears to be a nod to the original Pokemon game releases. Pokemon Blue was released in America at launch, and Pokemon Green was available at launch in Japan.
In the American version, the house on the right is colored blue, while in the Japanese version it’s green. This appears to be a throwback to Pokemon Blue and Pokemon Green, which were released in the west and Japan respectively.