A "guild field" is not a well-defined matter, but I think it's still the easiest engineering field to sit at home on your personal gear and learn skills that can get you hired in a real job with a future without attending any professional school for the field.

In fact the four-year degree you'll get from school is getting increasingly distant from the skills I actually want out of a new grad. It's not impossible to bridge the gap or anything but my transition into the commercial realm in the early 2000s was a cakewalk compared to the sheer number of things I'm asking a new grad to learn as soon as they're settled in at their desk... source control, CI/CD, bug trackers, devops, and that's just the beginning of that list not the end.