VPI JMW arm users - question... are these low/med/high mass arms???

Getting back into analog big time after many years away...

Trying to learn more about cartridge compliance mating with arms of differing effective mass.

Question --

for the JMW 10.5 metal AND the newer 3D 10 in arms, are these considered low, medium or high mass arms?

And does the fact that these are uni-pivot arms change how these arms interact with different carts of varying masses and compliance in terms of their effective mass?