Source of RegEx examples of Secret Detection patterns in repositories?

Where can I find RegEx that can pattern match common secret strings?

I have a product that scans repos and commits and in case a developer tries to commit a secret (i.e. passwords, keys). It scans for roughly 30 patterns by default which seems insufficient given thousands of repos in over seventy languages. I can expand that scanning with RegEx. However, I don’t know every common secret there is.

Is there a framework, list, or tool that can provide RegEx or patterns for likely secrets?

Where can I get comprehensive lists of secret types?

Or am I doomed to writing a metric ton of RegEx then being held responsible for when something is missed?