Strongest Gym Leader of Every Type: Best Teams

After watching MandJTV's Youtube videos "Strongest Gym Leader of Every Type" and "If Every Gym Leader Was The Last One" it got me thinking about making a similar list. I agree with his choices of Gym Leaders but as for teams I think they could be different. The rules I set for myself are in the first chapter. Note that this is my opinion. If you agree cool, if not that's fine.