Where did this data come from?

In looking for a solid list, I determined that the US Bureau of Labor Statistics would provide an excellent starting point for comprehensive listings of titles. This data can be found at Standard Occupational Classifications in 2018. Specifically, I made use of their Direct Match Title File, because it seemed to have the most comprehensive list and provided SOC categories.

Here's the Header from the file:

U.S. Bureau of Labor Statistics On behalf of the Office of Management and Budget (OMB) and the Standard Occupational Classification Policy Committee (SOCPC) November 2017 (Updated April 15, 2020) Questions should be emailed to soc@bls.gov