Yeah PA has two democrat strongholds and one is still a majority-black city and still one of the ten most populous in the USA. I think MI is the reddest of the three, WI in the middle, and PA the bluest. WI and MI are a lot alike in that outside the urban big cities they are mostly whites without a college degree as opposed to suburbs in the South. The college educated whites are mainly clustered in Ann Arbor and Madison, and the nice outer west Detroit suburbs like Bloomington Hills, Farmington Hills, Troy, Southfield, etc.
North Carolina really surprises me, I didn't expect it to go back red after 2008 but it has every time since. Especially considering it's such an epicenter of education and technology and millennials these days. So many college towns, so many colleges there. I expected it'd be Virginia South but it's not.