These are the many Shinkansen , with different train names for the same route with different stops .Below are the Shinkansen name , with the route name (click on Route to display) , the train type and station stops.
If you are using a JR pass (1st Class [Green] or standard) it is recommended that on the busier lines that you make a reservation, there are reserved and unreseved seats
Due to the frequency of the trains you can go to the station and make the reservation for the next train leaving
Below are maps of each of the islands and the route associated and the shinkansen and train names
Note: Make sure to check the station names , for example Shinkansen departing out of Osaka leave from Shin-Osaka(see the map) , this in not Osaka or Namba station