Note that this is all my opinion! Megas and Gmax do not count BTW
In this version, Steel, Fairy and Dark types exist from the start
Bulbasaur line to pure Grass type (They only learn one Poison move through level up. Not much things relating to poison are mentioned in their entries anyways)
Charizard to Fire/Dragon type (It literally is a dragon)
Blastoise to Water/Steel type (Steel cannons)
Arbok to Poison/Dark type (Edgy snek)
Alola Sandshrew line to pure Ice type (Again, not much relating to Steel)
Nidoqueen and Nidoking to Poison/Fighting type (Big strong rodents)
Vulpix line to Fire/Psychic type (Magic foxes that can curse people. Ninetales can also be Fire/Ghost but I prefer the Psychic type)
Pidgey line, Spearow line and Farfetch'd line to pure Flying type (NORMAL IS NORMAL)
Jigglypuff line to pure Fairy type (NORMAL IS NORMAL)
Psyduck line to Water/Psychic type (Most misleading type ever)
Galarian Ponyta to Psychic/Fairy type (Another misleading type)
Galarian Farfetch'd to Fighting/Flying type (Birb)
Seel to Water/Ice type (Seal)
Cloyster to pure Water type (Ice doesn't make much sense TBH)
Voltorb line to Electric/Steel type (Steel Pokeballs)
Marowak to Ground/Fighting type (Uses bone as a weapon)
Chansey line to pure Fairy type (Looks like fairies)
Kangaskhan to pure Fighting type (Boxing kangaroo)
Horsea line to Water/Dragon type (LITERALLY THE DRAGON POKEMON)
Electabuzz line to Electric/Fighting type (IK they only learn one Fighting move by level up but they look like they will beat you to death)
Jynx to pure Psychic type (Only learns three Ice moves by level up)
Staryu to Water/Psychic type (Psychic stars)
Gyarados to Water/Dragon type (LITERALLY BASED OFF OF A DRAGON MYTH)
Aerodactyl to Rock/Dragon type (Fossil dragon)
Mew to Psychic/Fairy type (Cute cat that is a literal God)
Yes Kanto doesn't get any more Ghost types despite all of this. I don't think Johto would get any either so I guess we'll wait till Hoenn