I got an idea. Why shouldn't there be a separate section for each Pokemon stating attacks that were only ordered/used in the dub, and clearly stated as such? Like, for instance, Whirlwind was dub-only for Bulbasaur, I believe? That could be noted under Ash's Bulbasaur. This would actually be good for stopping people from asking why a Pokemon doesn't have a move listed that it seemed to use in the dub.
Also, someone on Bulbapedia put that Jessie's Seviper used Rapid Spin. Now, before you report me for not reading the rules, I assure you, I did read the rules. I am not in any way trying to pass off stuff I got off Bulbapedia as fact. I am merely asking if this really happened. I figured that this was the best place to ask such a question, as almost everyone who has the required knoweledge of Japanese and the access to the original frequently posts here, not to mention that if it turns out that Seviper DOES know Rapid Spin, it'd get posted here anyway. And yes, I am fully aware that Seviper can't actually learn Rapid Spin, but such limitations have rarely stopped the writers in the past.