Here’s how it is at my gym, we’re average around here as far as I know (region 6):
Preteam: probably 4/5/6, not really sure
L3: 5/6/7
L4/5: 8/9, maybe 10
L6: 11/12/13
L7: 13/14, maybe 15
L8: 14/15/16
we don’t have any 9/10
Bronze: 8-11, one 14
Silver: 11-15
Gold: 12/13 - 17
no platinum/diamonds