This chart displays best movesets (highest DPS + EPS) for every Pokemon in Generation I after moves were balanced on February 17th 2017.

Big shout out to TheSilphRoad for their Global Pokedex, as this chart would not be possible without it.

Be aware trainer: this chart is not opinionated. The best move set is determined by the move combination with highest DPS (with STAB included and Energy considerations) and this should not be used as a Tier List of any sort.