There are a standard set of PIDs published in SAE J1979. That standard is a copyrighted document so you won't find it on the internet. Try the university library, otherwise it'll cost about $50 at the SAE website. Ford exceeds the basic requirements and also has some of their own enhanced parameters. The membership is $7500 a year for access to the enhanced data, and there's no discount or assistance for university students.
OBD-II PIDs work on all cars -- but the automaker doesn't need to support everything.
Intake Manifold Absolute Pressure - 0x0B
Air Flow Rate from Mass Air Flow Sensor - 0x10