I'm not sure about any KOs, but here is the speed tiers, you decide, I highlighted any relevant pokemon:
262 / Politoed, Breloom / 70 / +Spe / 252 / 0
261 / Gyarados / 81 / Neutral / 252 / 0
259 / Venusaur*, Mamoswine, Dragonite / 80 / Neutral / 252 / 0
256 / Latias* / Neutral / 0 / 0
253 / Heatran / 77 / Neutral / 252 / 0
251 / Scizor / 65 / +Spe / 252 / 0
250 / Cloyster, Metagross / 70 / +Spe / 208 / 0
249 / Togekiss, Dragonite / 80 / Neutral / 212 / 0
247 / Kingdra / 85 / Neutral / 164 / 0
245 / Togekiss, Dragonite / 80 / Neutral / 196 / 0
245 / Heatran / 77 / Neutral / 220 / 0
244 / Celebi*, Zapdos / 100 / Neutral / 32 / 0
244 / Gliscor / 95 / Neutral / 72 / 0
244 / Rotom-A / 86 / Neutral / 144 / 0
244 / Gyarados / 81 / Neutral / 184 / 0
244 / Jirachi / 100 / Neutral / 32 / 0
243 / Tyranitar / 61 / +Spe / 252 / 0
240 / Tentacruel / 100 / Neutral / 16 / 0
239 / Politoed, Breloom / 70 / Neutral / 252 / 0
Most notably you outspeed Heatran, Jirachi, Celebi, Gliscor, and Mamoswine.