TPS vs ETC Drive/gear vs P/N

There are many tables/parameters labeled according to TPS, but for electronic throttles TPS is not accurate. Some go by ETC% and some by ETC Pedal%

Similar P/N or gear/drive isn't completely accurate for manual transmissions. Somethings that refer to neutral don't apply to stick shifts and some do, but in some cases neutral appears to apply to the clutch pedal being depressed regardless of the state of the transmission.

Is there any information out there that straightens this out?