“Rules Version 2” is from Jungle 
Also, I shared these on Discord earlier, but I should just repost them here as well: the credits pages of the first five Japanese rulebooks.
Japanese version 1 Rulebook (Japanese Base Set, October 1996):
Japanese version 2 Rulebook (Pokémon Jungle or Mystery of the Fossils, early 1997):
Japanese version 3 Rulebook (Rocket Gang, November 1997):
Japanese version 4 Rulebook (Brock & Misty decks, April 1998):
Japanese Neo version 1 Rulebook (Neo 1, February 2000):
I have more Japanese rulebooks, but from VS forward they stopped including these credits pages.