I agree I think any of the 3 are just as good as each other. Bulbasaur is a good one to use for the 1st two gym badges. The reason I went for charmander is he was one of my favourites to use when I originally played this game and I haven’t played it for a while.
Remember, a zero build strategy can be challenging, but it can be effective when executed correctly, especially in situations where you want to remain unnoticed and conserve materials.