Missing clarity on what each plan includes and permits and API documentation

Thanks,

Is there any “map” on we can see clearly what each plan permits in terms of API methods options and data returned?

Another question, if you can help, regarding FlightInfoStatus returned object, what is the difference between:
filed_departure_time Timestamp? Runway filed departure time
estimated_departure_time Timestamp? Runway estimated departure time
actual_departure_time Timestamp? Runway actual departure time

Estimated, is what is planed, actual, the real time of departure, filed? Or am I wrong? Thanks