Pidgeot, Golbat, and Hypno are easier to get relative to the three Pokemons above, and have the advantage over Venusaur due to the relationship of types.
Pidgeot and Golbat
While the damage of grass-type moves Venusaur uses are reduced, Pidgeot and Golbat use flying-type moves, such as Wing Attack and Air Cutter, which are super effective against Venusaur. Since Pidgey and Zubat are very easy to be captured, a player can get Pidgeot and Golbat easily.
Hypno cannot cut the damage of the moves Venusaur uses but its psychic-type moves are super effective against Venusaur.
How to Beat
Tap the name of each Pokemon for the best Pokemon to beat it.