Since I don't know much about Pokemons (used to play Pokemon Brick Bronze but it was banned before I could get far into the game), I just searched up "Top 10 Gen 1 Pokemons" and found these results.
Source: The Best Gen 1 Pokemon
This ranking was based off of a combination of how well these Pokemons can help you progress through the game, battling the various gyms, as well as how good they are to use competitively.
