In my 02, here are the ones I know work. (Going from memory so this may not be all of them)
All of the ones in the 7.3 section from Scangauge's website.
EOT * This one is a bit weird, and there appears to be at least 3 ranges, where the temp will go up to 255 and then down to I think 127. As I understand it, only the one in the warm engine range gives a correct reading.
MAP * I only see up to about 19 lbs on this, curious what everyone else sees. (AKA, Boost is somewhere around 5 lbs)
TPS (Note, in cruise control the pedal stays up so the sensor reads 0)
GPH (Best not to look at this one!
TFT (Shows the actual temp and not what the dash needle says)
Baro (I think Boost is calculated using baro and map)
Glow Plug % (I thought they were just on or off but this number does change and goes to 0 after a minute or so)
Ones I know do not work.
Fuel Pressure (Not sure about the one labeled "Fuel Pressure (if no FPR)"
Any Ficm gauges
Trans gear ratio
Torque into Torque Converter