Job growth in this context excludes jobs that returned after the Covid shutdown. It also should exclude part-time jobs.
It seems to me there are only a few ways job growth happens. The most common or frequently being recovery from an economic downturn such as a depression or a recession. Another is an increase in population. More people mean more services and goods are sold and therefore more folks work in jobs which supply these things. Historically, wars have a similar effect on jobs and the economy. For example, "In 1942, the federal government levied a 5 percent withholding tax on anyone who earned more than $642 a year. The war created 17 million new jobs at the exact moment when
15 million men and women entered the armed services--unemployment virtually disappeared."
https://www.economicsandpeace.org/wp-content/uploads/2015/06/The-Economic-Consequences-of-War-on-US-Economy_0.pdfThere is no reason for job growth that can be discounted. No matter what ignites it, is a valid reason. People in government leadership positions, such as the U.S. President generally take some of the credit for this whether they are directly responsible for it or not.