In effect, an action by the "FTC, FCC etc." is the same thing. Those bodies were created by congress to delegate the duties of congress to the Executive branch

In effect, an action by the "FTC, FCC etc." is the same thing. Those bodies were created by congress to delegate the duties of congress to the Executive branch. They work for the Executive but are given authority by the Legislature. The thing you may be conflating as the reverse is executive orders.