You have the boss/manager or whatever and you have the workers. As the boss many be engaged other tasks there will generally be a chargehand or foreman whose job is to see that work is shared between the workforce. That man is, in effect, the NCO.
Not a good comparison. The shop floor worker becomes a foreman and advances smoothly to Assistant Manager and Manager, eventually perhaps Departmental Director with a staff of several hundred employees. This is not pre-ordained at recruitment and induction. In a civil airline hangar for example, a foreman will make operational decisions for a workforce of around fifty mechanics, technicians, leading hands (JNCOs) and supervisors (NCOs); as a clue, it is generally upon appointment as a Manager that one might take control of a cost centre's budget.
Officers make decisions....
SNCOs ensure that the decisions are carried out.....
The ORs carry them out.
Too trite.
Come on keep trying. Why does the military find it necessary to segregate the officer corps from the other ranks?