Yeah it was weird. I wonder if they changed their minds after the plan was to keep everyone in the 8. They basically broke out as you would predict, so they could quickly lose their stereotype players. If you look at the 4 people groups, they mixed them up well.
So it makes sense to save 2 groups of 4 as they can keep a similar player safe. It doesn't appear like that was the original plan, but it was a good backup plan.