>>38265447The standard is Tauros, Chansey, Snorlax, Exeggutor, Lead (Alakazam is probably the best option) and Late-Game Threat (Golem is OK, but there are other good options).
>>38265272This is also standard offense in Gen 2, where Vaporeon can be exchanged for something like a dozen different things.
>>38265403Tyranitar/Skarmory/Blissey/Swampert/Gengar in Gen 3 is another example of five Pokémon that form a framework where pretty much anything goes in the sixth slot.