Google Identity provider for OAuth

I would like to know that how GCP as OIDC Identity Provider will be setup in Confluent Cloud for OAuth (SASL/OAUTHBEARER) and what would be their JWKS & Issuer URL, Is it specific to Google Service account then how it work with large enterprise applications.

And what’s max Identity provider can be created in Confluent Cloud.

It would be really helpful if someone provides relavent information or some example.