European, overstayed for several years, leaving from LAX. No longer have original passport with the I-94 I entered the US on, just a (valid) renewed passport. It's also unlikely I will have a photographic match in the system when photograph is taken at boarding. I know many people online claim that there is never an issue in leaving the US and I'm sure this was true in the past but a recent CBP document says this:
"If the system checks yield no derogatory information, the CBP officer allows the traveler to board/continue travel. Based on the inspection results and the queries using the newly collected biometric and biographic data, if CBP finds actionable derogatory information on the traveler, the CBP officer may escort the traveler to the FIS area to conduct further questioning and take the appropriate actions under CBP's law enforcement authorities."
Section 7 No Match Procedures, 3rd and 4th paragraphs: https://www.federalregister.gov/documents/2020/11/19/2020-24707/collection-of-biometric-data-from