Most “unskilled labor” is heavily skill dependant. You wouldn’t want a chef, builder or plumber who didn’t know what they were doing. And for production: machinists, mechanics and foremen make or break profit with their skills.
So what’s a better name for these jobs?
Those are all considered skilled labor because you couldn’t just grab a rando off the street to do it right now. The real issue is that you couldn’t just grab a random person to start moving heavy boxes around either because it requires physical abilities. Even “unskilled” jobs require skills which many don’t have. If you can’t stand for the majority of 12 hours then you’re unskilled in my mind, shouldn’t have skipped leg day. Workers, staff, general labor would be ok terms, but not great.