My team doesn't have a standard cheer, but I'll share a few that have stuck with me. I really like to join in with the fun ones
From 68 (Truck Town Thunder):
P1: Who are, who are, who are we?
Team: We are, we are T3!
From 862:
8-6-2! Orange and blue!
From 27 (with clapping):
G-O-O-D M-O-R-N-I-N-G. Good morning, hey hey, good morning!