I'm not as concerned about what herbs and spices Subaru specifies as I am about what might be added to the Nissan fluid. The Idemitsu website describes Type HP and Type J with the same phrases except for one:
ATF Type HP - Provides superior cleanliness, keeping the transmission free of sludge...
My 2005 Outback developed a leak in the ATF cooling line. I stopped at Advance Auto to buy AT fluid without referencing the manual, but specified the make/model/year. The clerk sold me 3 qts. of Idemitsu Type J, two of which went into the transmission. The third quart went in a few weeks later...