Shimano also claims some mtb rear derailleurs work with both 10 and 11 speed MTB shifters, although it's confusing because other MTB rear derailleurs are spec as only compatible with either 10 or 11 speed MTB shifters but not both. So it's not really known if 10 and 11 speed MTB rear derailleurs use the same pull ratios or not.

Be careful with the bike gremlin charts, some of them are wrong, for example they show 11 speed road and MTB cassettes having different pitch, but I can tell you that they are both identical on mine. Even the exploded diagram shows identical spacer thicknesses.