Audio iOS Spatializer Support via Unity

I can't find a Spatializer solution that is comparable to the Oculus Audio Spatializer package, in terms of flexibility or sound quality, that can ship on iOS via Unity. Is there any hope that Oculus might make iOS plug-ins available? Since Google Resonance is basically dead (and problematic in latest versions of Unity), the only option I have seems to be to extend the demo Spatializer Unity provides, which is not a great option (project scope, expertise, etc).
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Hi, did you find any solution to this?

Best,
Balandino.