Razor Leaf really had it.
Competitively popular and generally popular are two COMPLETELY different things, as is being evidenced by people's grade school memories. Not to devalue any of that, I have them too.
Dragonite and Charizard are actually good Pokemon, Dragonite's being a mixed attacker with Thunder Wave and Charizard having a nice Fire Blast/Earthquake/Body Slam-Slash core. Dragonite just had the x4 ice weakness, and Charizard water and rock weakness (Which you will see below are huge deals).
Smogon OU lists:
Alakazam- Thunder Wave lead and special staller.
Snorlax- Tank.
Tauros- Late game sweeper with a 24% critical hit rate.
Eggexegutor- Sleeper special powerhouse than can explode.
Starmie- Special powerhouse
Slowbro- Amnesia. That is all. Wasn't nearly as popular.
Jynx- Sleeper special powerhouse that is actually fast, unlike Eggy.
Persian- Divine speed, instata-critical slash. Often overshadowed by Tauros.
Zapdos- Electric dual attacker lacking a ground weakness.
Lapras- Bulky Starmie, pretty much. Not nearly as popular.
Chansey- Special Wall.
Rhydon- Electric absorber and late game paralyzed sweeper.
Golem- Electric absorber who could explode. Not nearly as popular as Rhydon, as he was stronger.
I know Jolteon, Cloyster (Defense through the roof and a STAB clamp in the days where is stopped everything), Dodrio, and perhaps even Dragonite got invited to the party from time to time.