According to bird keeper toby there's a very rare Chansey encounter on Route 6 that he didn't get.
There's a trainer on Route 1 now just before Viridian, he uses a Rattata and gives 3 pokeballs. The rival's right after him, he talks about your victory and shows you the Pokemon Centre.
Beedrill learns Rage at Level 13. In Gen 7, it gets it at 14.
Pidgey either learns Gust at 9, same in the games or at Level 5 which is earlier. The number was obscured in bird keeper toby's part 2 video, but he only has a level 4 and 5 Pidgey in the party so it's safe to say it's
Level 5. EDIT: Confirmed from another source
Starter Eevee learns Bite at 17, same in the games. Noting the form just in case.
Normal Pikachu learns Double Team at 12, in Gen 7 it gets it at 23 and in Gen 1 at 15.
Butterfree learns PoisonPowder, Stun Spore, and Sleep Powder all at Level 13, same as Gen 7.
(Judging from its Harden and Pokedex data, it seems like it was caught as a Metapod. It doesn't have Confusion, so maybe the evolution move mechanic from Gen 7 still exists and it just evolved after 11 (Confusion learn) and learned Gust on evolution, or it just doesn't have Confusion. No real context to base on though, maybe another video might answer this question.)
Rattata gets Quick Attack at Level 6. In Gen 1-3 it gets it at Level 7 and in Gen 4-7 it learns it at Level 4.
This guy actually goes into the league gates too. Also shows the Pokemon box but we know what it looks like from a trailer.
This german guy shows the nickname screen, it pops up a Switch keyboard and all. Still a 12 character limit.
Oddish learns Acid at Level 8, in Gen 7 it learns it at Level 9.
Pidgey learns Mirror Move at
Level 9 compared to the
Level 45 it usually got it at.
Nidoran F learns Poison Sting at Level 6 compared to Level 13 in Gen 7
Bulbasaur learns Leech Seed at Level 9, a shift up from Level 7 in the games.
Pidgey learns Quick Attack at Level 11, in the games it's mostly 13 with a 12 in Gen 1.
Pikachu learns Double Kick at Level 9. I think I've seen some with earlier, maybe gamefreak just hacked em in or I'm remembering wrong.
Nidoran M learns Double Kick at Level 9, same as the current games.
Rattata learns Super Fang at 20, this german guy lets us know it gets it at 28 in Gen 7. Another big drop
Pikachu gets Thunderbolt at level 21, earlier than ever and way back down from 42 in Gen 7.
Rattata gets Crunch at 18, usually gets it at 22 in the games.
Eevee learns Quick Attack at 6, normally learns at 13.