There are two types of people in this world. What are those two?

Male and female!

The haves and the have mores.

The rich and the poor and im poor

I had a similar philosophical exercise in college about this very topic. We were tasked with coming up with as many coherent variations on this duality as we could. Here are some I recall;

Those who render help and those who will always require it. 

Those who do remarkable things, and those who just talk about it.

Those who "get it", and those who never will.

Those who grow from failure, and those who just fail.

Those who believe, and those who know better. 

Me. And a load of other people.

Us and them.