PIT: wholesale cheese recs?
I'm pretty sure Pennsylvania Macaroni (PennMac) has a wholesale/restaurant/delivery operation in addition to their more well-known retail presence in the strip. Depending on how rare/local/etc. you're looking for, they should have a very large range of cheeses available. I think if you're looking for stuff that they can't source, you're probably going to be talking to the cheese-makers themselves to get the products.