Genuine question, how do you define productive work vs rent seeking? I think I’ve got the basics but I’m curious about the more grey areas.

Productive work: non subsidised primary producers, non subsidised mining, high quality manufacturing, high quality construction, high quality creators.

Rent seeking: almost all government departments, definitely all those engaged in social welfare work, agents, middlemen, bankers, brokers, stock traders, gamblers, moochers, looters, second handers.

Please steer me in the right direction if any of the above is off track. Are there clear categories or is it simply grey in every area of work and distinguished only by intention and effort?