Possibly the best panning I’ve seen is in the Vs collab from @official_ivo and @Southborne in Even Louder. They used a combination of high pass on some basses to make a panning hit that really sounds fantastic, long before the days of Auxy 5 giving panning of samples. Aside from that, there’s not much I can say.
If you’re going for true stereo expansion and width, some sounds feature it natively but they’re few and far between. The only four I can think of off the top of my head are Chalk, Grain, Cinema and Runner. If you want a real stereo expansion, your best option would be to export stems and use an external plugin in a DAW. Maybe @icsleepers can share if iOS has any AU’s for it xD