Baltimore reminds me of a combination of Richmond and Norfolk, more than any other one city. I went to college in Norfolk (ODU), and my brother lives in Richmond (Church Hill). I also lived in Baltimore for two years, and am now in my third year in Philly.

On an individual neighborhood level, there are some similarities between parts of Philly and Bmore, but the amount of gentrification, relative lack of blight, walkability, and sheer amount of people make Philly feel a lot different. There's also a level of wealth and young families that you just don't see in Baltimore neighborhoods. Same goes for the amount of retail and shopping, and relative lack of business vacancy. Baltimore is a large built environment but feels deserted.

Lastly, Center City is a top downtown in the country in terms of population (2nd or 3rd most populated), walkability, and population density. It feels like a true large city. Downtown Baltimore is more deserted than downtown Richmond, and has practically no new development beyond 414 Light and the new M&T building on Light.

Regarding Atlanta and Charlotte, I think they have a lot of similarities to each other.