>>35924730If you have access to trading, Alakazam is easily the best Pokemon you can use in the game. Psychic back then was still a good offensive typing and Dark and Steel types are still rare to see. It also has access to the elemental punches so it can hit nearly every Pokemon in the game for super effective damage. Snorlax is basically only used by one trainer and Chansey/Blissey is used by none so the special walls it fears are almost non-existent in a playthrough.
Out of the starters, Totodile is the best one. Has the most wellrounded stats, and can learn the three water HMs if needed. Has solid matchups throughout the entire game.
Grab the Kenya Spearow since it can learn fly, and has an excellerated growth rate due to being a "traded" Pokemon. Because of it leveling up fast, it can max out friendship quickly and be taught Return. If you havppen to come across a female Dragonair, you can trade it for a Dodrio in Blackthorn.
Snorlax in Vermillion comes at a higher level than any other wild Pokemon and is basically battle ready so may as well slide that into your team. Outside of the box legends and mythicals, it's the best Pokemon in the competitive format which says quite a lot.