I want to know the answer to the following question:
Often regular everyday craftsman were most likely what?
All the background I'm provided with is that "Greek figural mosaics could have been copied or adapted paintings, a far more prestigious artform, and the style was enthusiastically adopted by the Romans so that large floor mosaics enriched the floors of Hellenistic villas and Roman dwellings from Britain to Dura-Europos.". Is that enough to answer the question?
Answer: no