Message presets?

what determines who are the three listed in you message presets?
My are currently in this order
1. My buddy Bobby
2. My dad
3. My mom

But that's not what I want. Those are three people I text, just not a lot.

I would much rather it be
1. wife
2. Bros group
3. Then Bobby

Anyway to reset the list or force it to a different list?
Really kills usefulness to not be able to set it.

 

When you do 3D Touch on the message app it pulls up 3 people and new message. But the list of the three people makes no sense. It's not the 1st in the most recent message or the top 3 in the favorites section.
I can't figure out what drives that list of three.