Is it possible to make a team with no weaknesses?

Question

As in like they can counter each others weaknesses, example, like half the team doesn't have a weakness to say fire. If so, what are some teams?

Answer 1

There are some teams that seek to cover all weaknesses with immunities. These teams are called Lockdown teams, and Mewderator made one at one point, I'll find it for you.

Here is the team

So these team generally use typing immunities as well as ability immunities to cover ever weakness they can, some notable types and abilities are Normal types, Ghost types, Volt Abosorb and Sap Sipper.