Really dont have any.
I ride roads with people from 12 to 70.
athletic shorts are worn. Mtb shorts are worn. Kits are worn. Jerseys are worn. Cotton tshirts are worn. Cycling shorts are worn.
heck, just last night for shoes there were road shoes, mtb shoes, running shoes, and keene sandals.
They all wear what they wear out of comfort and availability.
i did question the kid wearing a hoodie when its 75, but its what he wanted so whatever.