Who exactly is the “Command”?

And how could they be so confident that the machines won’t wipe out the androids completely after they find the back door in the Bunker? They couldn’t have known that the machine network decided to act differently this time. Are they some sort of high ranking androids? According to Yoko Taro’s answer in the game guide vol 2 (1st screenshot, Q7), Command is the Council of Humanity which never existed in the first place. But who then directed orders to Commander White? Who came up with the idea in the first place?Where do they end up after the ending of the game? According to the universe chronology from the same guide, there was a peace treaty between androids and machines after the end of the game (2nd screenshot). Was it the “Command” who negotiated it?

Wow I thought I’d get all the answers after going through the materials. But no…