I want to be legal and pass home inspection. I'm in California in the USA, replacing some electrical outlets.
ETL appears to be less-common, but equally recognized:
The main difference between UL and ETL listed products is that ETL doesn’t create its own standards for certification. UL develops standards that are used by other organizations, including ETL.
Both are Nationally Recognized Testing Laboratories(NRTLs). They serve as non-governmental labs that operate independently. Additionally, they are recognized by OSHA as being suitable labs to test products based on safety standards.
Will ETL GFCI outlets pass a home inspection for a garage that's apparently required to have GFCI outlets?
This is one of the GFCI "ETL Certified" outlets on Amazon I am considering. $20 for 2.