When I decode the route from FlightAware, it seems to me that there are mainly three different types of waypoint, which are Waypoint, Reporting point, and NAVAID. When the website is saying about ‘Waypoint’, does anyone know if it is either RNAV waypoint or GPS waypoint?
For the United States, FAA Order 7350.9 (Location Identifers) contains the definitions of waypoints. You can download the pdf from the FAA web site or use the on-line search tool at https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/loc_id_search/