I wouldn’t sweat the wet clutch friendliness of JASO MA(and Allison C4) rated oils. Honda for years called for 10W-30 API SH/SG/SJ/SL oils for their motorcycles and car gearboxes until friction modifiers were introduced with the API SM/ILSAC GF-5 specs.Another oil worth considering is a motorcycle oil. I found one that is API SJ.
Would the wet clutch additives be something to avoid though?