Yeah, the criteria that Google uses to evaluate its search results are documented publicly and in exhausting detail right here:

https://static.googleusercontent.com/media/guidelines.raterhub.com/en//searchqualityevaluatorguidelines.pdf

If you have a week to spare, you can read through and decide which principles you agree with and which you don't like. And you can call them either "biases" or "principles" depending on your mood.

Either way, I do not think there is yet anything remotely this comprehensive (and public) guiding the behavior of language models.