Facial capture using ARKit Shapekeys

I’m looking for help creating the ARKit shape keys for my character. I know there’s a list of 52 of them, but when I try to create the shape keys and use them for facial capture (using Rokoko Studio and their blender plugin), the facial capture just isn’t great (I’m assuming there’s something I’m not doing right along the process, and not that I’ve maxed out the facial capture capabilities).

Is there any place to get those shapekeys made for your character? Polywink doesn’t seem to work for blender I don’t think. Is there anything like it?

Any help would be really appreciated.

Thank you!