TheArm, Dallas was indeed its own family and was never part of the New Orleans family. Dallas had joint operations with New Orleans, Kansas City, San Jose, and Denver crime families. It has been rumored that the Dallas crime family served as a buffer when the Colorado crime families (there were two of them till they merged into one) and Kansas City who were going at it in 1919/20 during prohibition.

On saying that Pittsburg, Scranton and Rockford are viable, I see no family structure in any of them.