Seeking Rich, Realistic Vocal Harmony Generator

Hi All,
In this Forum it has been many years since this topic was asked (forgive me if I am mistaken). I noticed on a video the rich and realistic vocal harmonies inside the VariAudio function of Cubase Pro (11.0). Since Steinberg does not produce VariAudio as a stand-alone plug-in, does anyone know of a product/plug-in with similar functions to get decent vocal harmonies? (I operate Cubase 10.5 AI, which does not have VariAudio). Thanks!