Got a bottle of the Mobil V-Twin here. Says JASO MA so I'm guessing it's fine for the wet clutch.
And don't worry about JASO MA vs. JASO MA2. They are both fine for wet clutches. One is a bit better for the catalytic converters hence the environment but both are pretty close in their composition. Just stick with the MA designator overall until it eventually changes to MB or whatever?