According to this article: Miami, Jacksonville, Las Vegas, and Cleveland.
https://www.bloomberg.com/news/features/2020-12-04/how-metro-areas-voted-in-the-2020-electionSuburbs of Pittsburgh, especially Beaver County
Biden actually did better than Clinton in the Pittsburgh metro area. In fact, he came very close to winning it. Check out the article.
I actually think it’s going to trend Democratic since Republicans have pretty much maxed out in south western PA (especially in Greene county) and Democrats have plenty of room to grow in Allegheny. It also looks like Butler, Westmoreland, and Washington are trending D, even if slightly.