North America by commuter rail

So after looking at urban rail systems, how well are commuter rail systems connected to long-distance rail in the US and Canada? I couldn't find an enthusiast site with a good list for this one, but here are the systems that I did find that are ultimately connected to longer-distance rail systems:

• Altamont Corridor Express
• Caltrain
• Coaster
• CTrail
• Exo
• FrontRunner
• GO Transit rail
• Long Island Railroad
• MARC
• MBTA commuter rail
• Metra
• Metrolink
• Metro-North
• NJ Transit rail
• New Mexico Rail Runner Express
• Northstar
• RTD commuter rail
• SEPTA
• Sounder
• South Shore Line
• Sprinter
• SunRail
• TEXRail
• Trinity Railway Express
• Tri-Rail
• Virginia Railway Express
• West Coast Express
• Westside Express Service

In fact, I only found two systems that don't connect to long-distance rail: Sonoma-Marin Area Rail Transit (which does connect to a ferry service though, which makes it still kind of cool to me) and WeGo Star.