I don't understand your first point, about not being alone.
As to examples of specific regional culture:
Palestinian tatreez (embroidery) differs from village to village, city to city. There are very specific motifs, and motifs used in tandem, that signify where the wearer is from specifically, particularly if they are wearing their bridal thobe.
Palestinian food is a bit different to Jordanian (though there's some similarities). Different cities and regions are famous for specific food. For example Nablus is famous for its knafeh made out of cheese specific to Nablus, the region my family lives is very famous for its 'msakhan' and a stew made out of a particular type of leaf that only grew (historically) in that area in Palestine. Then in Gaza seafood and hot spice is common (close to the ocean and Egypt), while it's not so common inland. All Arabs would consider the food I just described as Palestinian whereas food like hummus, waraq 3nab, etc is common across the region generally.
They're just two examples. But lots is more intangible of course- stories passed down from grandparents which were passed down from their grandparents, wedding traditions and greeting styles specific to towns, just the idiosyncracies of centuries of a culture developing and being perpetuated through generations.
That was quite a long answer, and so I'm really hoping your question was in good faith..