That would be a category of boxer. Basically it is meant as a description of a lower level fighter but, sometimes the media will use the reference loosely and christened even a rated commodity as a "Journeyman". You might be able to get better depth on this reply if we use names of past and present boxers. It is a nice study, time applied.. Perhaps "Rocky" in the Rocky series would be a legitimate Journeyman boxer.
Journeymen
In a union shop, there are three levels of workers: apprentices, who are being trained in their trade; journeymen, who are proficient; and master tradesmen, who train apprentices and advise journeymen. I also found out journeymen were once called jacks.
Journeymen
The cast of Journeymen - 2012 includes: Joshua Boone as Booby Keith Randolph Smith as Fitz
skilled workers employed by masters
Normally union journeymen plumbers
Compass
the Willet Family has written: 'The rowing journeymen'
Journeymen were workers who had been through apprenticeship but not yet finished a masterwork and achieved the status of master. It was not uncommon for them to move from one town or city to another, working with a number of masters to learn what they could from each. They were not called journeymen because of travelling, but from a French word, journee, implying that they could charge a fee for each day's work.
last year most of my journeymen netted over $145,000
Masters, apprentices, and journeymen are most closely associated with the guild system in medieval and early modern trades. This hierarchical structure facilitated the training of craftsmen, where apprentices learned under masters, journeymen worked to gain experience, and masters oversaw the quality and standards of the trade. The system ensured skill development and maintained high standards within various professions.
The area where a boxing fight is held is called a boxing ring.