IIRC the nerds at school back in the day were 'into' Queen, Wishbone Ash, Thin Lizzy, Eagles and the like. The not-really-rock-at-all rock bands of the pre-punk era.
Prog fans more often than not were those of us who had girlfriends with tangly blonde hair and really smelly kaftans and who chain smoked roll ups and claimed not to mind sitting on the floor at the Roundhouse or St Albans City Hall for hour after hour in pursuit of the great lost mini moog solo.
This usually involved mushrooms and a lot of staring into deep space while people with long hair and big leather tool belts wandered the stage trying to remember where they had last left one of the three keyboard stands that the support band absolutely could not and would not live without.
There were often krumhorns and sackbut involved as well. Not to mention Andy Dunkley. And Jesus.