Multi engine is multi engine. No matter the weight. I would assume the little mini partenavia (tecnam twin) would also qualify.
Not sure if it has changed recently, but the airlines don't normally count twin engine centre-line thrust aircraft C336/7 as multi-time. Had a funny feeling this notion had been repealed though.
And you leave Islanders alone, they're an awesome old bus. I'd take an Islander over any other piston twin around.
This is more an FYI question.
I don't understand... you know the answer?
j3