Rail lines similar to or like Northeast Corridor

Amtrak's flagship high speed service along the Northeast Corridor (NEC) in the Northeastern United States between Washington, D.C. and Boston via 16 intermediate stops, including Providence, Baltimore, Philadelphia, and New York City. The route contains segments of high-speed rail, and Acela trains are the fastest trainsets in the Americas; they attain 150 mph on 33.9 mi of the route. Wikipedia

Regional rail service operated by Amtrak in the Northeastern and Mid-Atlantic United States. In the past it has been known as the NortheastDirect, Acela Regional, or Regional. Wikipedia

Passenger railroad service that provides medium and long-distance intercity service in the contiguous United States and to nine Canadian cities. Managed as a for-profit organization. Wikipedia

List of major infrastructure on the Northeast Corridor, a rail line running through the northeast United States. The list includes major interlockings, bridges, tunnels, and past and present stations, including MBTA Orange Line, WMATA Orange Line, and PATH stations on separate tracks but sharing the right-of-way. Wikipedia

Suburban commuter rail service run by the Metropolitan Transportation Authority , a public authority of the U.S. state of New York and under contract with the Connecticut Department of Transportation. Metro-North runs service between New York City and its northern suburbs in New York and Connecticut, including Port Jervis, Spring Valley, Poughkeepsie, Yonkers, New Rochelle, White Plains, Southeast and Wassaic in New York and Stamford, New Canaan, Danbury, Waterbury, and New Haven in Connecticut. Wikipedia

Commuter rail services in the United States, Canada, Cuba, Mexico, Panama, and Costa Rica provide common carrier passenger transportation along railway tracks, with scheduled service on fixed routes on a non-reservation basis, primarily for short-distance (local) travel between a central business district and adjacent suburbs and regional travel between cities of a conurbation. It does not include rapid transit or light rail service. Wikipedia