Oda says that Chopper would be higher with walk point, that immediately puts at least Luffy under Chopper, Zoro would be higher if he doesn't get lost, that immediately puts him above at least Luffy that is now under Chopper. Chopper and Zoro are the fastest, the one that danced around Lanji's opponent and the one that nearly oneshotted him.
Now that I read the OP, poor kid made this whole topic just compare Lanji's non existent speed with Zoro. Zoro blitzed Kaido and King, the n°4 got blitzed multiple times by Queen, Page1, couldn't outrun Maria's gifters and got captured at least 2 times. Even Chopper dodged all of Queen's attacks.