Typhlosion is in the forest place and you will need to cut down a bush. (Venasaur and 2 combusken are behind some others.)
Feralligator is in the sewer place. you need the tangela or ivesaur or bulbasaur to go across the place after the koffing and then you will need a fire x2. It will pop out of the water.
If anyone needs help finding a pokemon, I'm your man.