I don't know much about Pokémon. But I'm learning more and more, day by day. I became a Pokémon fan when I got Omega Ruby, August 21, 2018. Now, I don't have as much knowledge as you, the reader combined. And that's OK. Nobody's reached peak Pokéfan yet. I still have yet to watch these following series:
Johto Journeys (currently watching on Pokémon TV)
Master Quest/Advance Gen
DP (on DVD)
Black and White
I had Pokémon Black 2 and Omega Ruby, but I lost those.
I actually hated Pokémon because of all the battles *sounds like a certain someone...*
I knew Pokémon cause my cousins watched it.
Marlon is the best Gym Leader.