Hello! I don't have any more details for my experience with Leafeon, sadly. If you or anyone else feels that it deserves a different tier than B, then that's fine by me. It just felt like a solid but not perfect Pokémon when I used it.
Also, I really like how you started a new thread for US/UM! I won't be able to add anything more to it, but I hope the list can be completed one day. Keep up the good work!
Last time I used Miltank I felt it was A tier. The speed/bulk combo make it one of the few things that can stand up to Lance reliably between Milk Drink and potions to wait for misses/confusion as necessary
I'm your opponent for the PSPL this week, I'm GMT-4 and im mostly on late mornings until around 4pm and im free Wednesday through Friday if you're available at any of those times, and im free all day Saturday