I need your pokemon suggestions!

Hi everyone! I'm still trawling through creating menus, but I want to rely on you guys as a community. I'm trying to add a "Challenges" option that will have a predetermined group of 10 pokemon for the wheel, but I'm struggling to come up with interesting themes or ideas for them. Ideally the "theme" of the challenge would be able to be described in a word or two. Don't worry if pokemon you think would be good for a challenge aren't in the game, I can easily add them in. I just need to rely on your creativity and ideas for now!

If you come up with one, please comment it below this post. Ideally the format would be the chosen name, the 10 pokemon, starting from smallest, then going to largest, and maybe a short description of why you think it works (if there isn't an obvious theme).