I know you're trying to summarize some info., but your first and last notes I checked for the dynasty 200dx are incorrect. I didn't check the other welders. You have stated that the max wattage output for the welder is 2400watts, which is incorrect. I suspect you derived this from the 150amps,16volt tig spec on single phase 230vac. The unit easily runs to 200amps on single phase and the output voltage can be extrapolated from the other data points (y=mx+b linear equation). I'm not going to take the time to look at the other values, but just thought you might want to recheck your specs. Also, your first post indicating the single phase MAX draw is 15.8amps for the dynasty 200, is also incorrect. 15.8 amps is the draw for 150amps,16volts. If you increase the amperage to 200amps for tig, the input is likely to be about 22-23amps. Stick welding will draw higher input amperages as well.
-dseman