I'm not a ZZ attachment X-spurt, but I have used / attempted to use them.
I have the 160985 I believe and it works fine on my 201-2. But it doesn't work worth a hoot on my 15 clones. My wife pointed out that the vertical travel of the needle bar is less on the 15 clone than the 201. So the ZZ patterns are narrower.
I haven't tried the ones we have on the Singer 15s, 99s, or 185s so I don't know for sure how they work.
Joe