The USA versions of the 85/15 are a bit more refined and clearer sounding than the "S" versions, but they're generally close in terms of voicing and output. To be clear, there have been a few iterations of the "S" versions and user-reported specs are kind of all over the place. The older ones were produced by G&B, later ones were produced by Cort, and now they're being made by G&B again. I've had all 3 generations and, personally, I find the Cort versions from roughly 2020-2024 to be closest in sound and clarity to the USA models, but there are still subtle differences.
Anyways...
Directly in line with what
@alex1fly suggested, the
'78 and
High Voltage sets I recommended above are both "vintage hot" sets and are likely to be more similar to the 85/15 set than some of the pickups you'd *think* would be a match on paper (i.e. A2Pro, Seth, PG set, etc).
Interestingly, another forum user replaced their USA-made 85/15 set with a
Whole Lotta Humbucker set a couple years ago and felt that they actually sounded very similar to the 85/15 set.
I remember liking the WLH set myself, so this might be another option to consider. Like my other recommendations, the WLH is another "vintage hot" set, but they use A5 mags for a little more punch and bite than you typically get with an A2 (which the '78 and High Voltage sets both use).