I'm also not aware of any centralized registry.
I will note that in the United States, the National Institute of Standards and Technology did a study on facial recognition tools a couple of years ago. It was a widely publicized study that found the racial bias inaccuracy. In that study, I believe they looked at least 99 commercial facial recognition tools that were sold by companies. That didn't even include any facial recognition tools from big companies like Apple, Amazon or Facebook.
That's just to give you a sense of the number, but I am not aware of any centralized registry.