Everyone is entitled to their opinion regarding taste.
There are literally thousands of pizza joints in the Pitt - W PA area, and some maybe great, and some maybe just "unique".
As you said everyone has their own subjective taste, but there isn’t a pizza joint ANYWHERE in this region that is recognized by anyone who wasn’t born and raised here as a “great” or blue ribbon pie.
Sorry, you may love it, and there are plenty of mom and pop shops here... unlike many other places... but none, none of them are worth making a trip to Pittsburgh to have.
There are pizza shops that are worth a trip to their home cities just to have.... There are no such places in Pittsburgh. Best you are going to find is some that are unique, but not remotely among the greats.