This is interesting to me since I grew up south of you in western Adams county, in the South Mountain area, which is the northern tip of the Blue Ridge Mountains in MD and a bit of PA. The Appalachian connection was definitely there, we listened to bluegrass, lot of Western PA cultural influence, everyone had a small plot farm on the side, and a lot of people had family in the other parts of Appalachia. The Trail was only 20 minutes away. But we were also in Dutch Country, there weren't buggies around us or the big rolling farms because of how hilly and forested it was, but there were quite a few Mennonites and we had much of the same food you could find throughout South Central PA.

In short, we considered the area Appalachian, but not as Appalachian as WV, KY, or SWPA. We were kinda like the Appalachian foothills, with Mid-Atlantic, PA Dutch, and Appalachian culture, a unique mix to our little corner in South Mountain and the Cumberland Valley. Some joke about the East-West divide but I've lived in like 4 different parts of the state and each subregion has it's own unique thing. Western PA has far more Midwest influence that you get in Central PA in my experience. Love the geography of this state.