Theres the MSF route, the NESF route, the Triada route, the Inoco Route, and the Alex route.
Your initial three choices are MSF, NESF, and Triada. During the Triada route you have the option of abandoning Triada for Inoco. If you fail ANY of the missions on any of the routes, you get automatically placed on the Alex route.
Thank you for the information Nanaki. Much appreciated