THAT'S IT! That is the full list of powers given to the President by the Constitution. Commander in Chief, I grant you is a big one. Big enough that it warrants the office even if there were no other powers. But there is nothing in here about making a budget, nothing in here about authoring the really big beautiful bill, nothing in here about telling the departments what to do. In fact, the founders seem to hold executive department heads pretty high if they felt they needed to give the president an explicit power to require written opinions of them. So much for axe grinding. I have separated the last two items by themself. That is because the last item is in reference to its predecessor and that was not obvious to me until I did this.
The President appoints a large percentage of the significant government personnel. He does that with the advice and consent of the Senate. So, how does that work if the Senate is in recess? The last sentence explains how he is able to keep the government running without the Senate. He has the power to fill vacancies that occur during the recess.