There are many different synonyms that can be used to describe industrial magnates, depending on the specific context and industry being discussed. Some of the most common synonyms include tycoons, barons, captains of industry, powerhouses, moguls, giants, and captains. Other possible synonyms might include entrepreneurs, innovators, pioneers, or visionaries, depending on the specific qualities or accomplishments of the individuals being described. Ultimately, the right synonym for industrial magnates will depend on the tone, focus, and intended audience of the writing, as well as the specific individuals or groups being discussed.