Please tell me what shared cultural heritage a white boy from a trailer park in eastern Kentucky has with a white boy growing up in Park Slope, Brooklyn, or Cam

Please tell me what shared cultural heritage a white boy from a trailer park in eastern Kentucky has with a white boy growing up in Park Slope, Brooklyn, or Cambridge, Mass? They don't speak the same dialect, they have ancestors which came from completely different cultures in Europe, they don't vote the same, and one of them's death is ignored by the media if he overdoses on Oxycontin. (The opioid epidemic was hitting Appalachia very hard for a decade, and didn't get attention from politicians until it hit New England)