Just a couple things to point out.
Firstly, I don't even know if Charizard even deserves a spot in the Speed Tiers anymore. It only got 1.6% usage in April, and 1.2% in May. It isn't at a unique Speed tier either, since there's already four other Pokemon at base 100 Speed that make the list. It's just hard to justify letting it keep a spot right now.
The other thing is very small, and it's that while you have the current Klinklang spread of 156 Speed at +2, the outdated spread of 124 Speed is still included at +0. It reaches 255 Speed rather than the old 247.