Star Trek Time Machine does sound a lot like City on the Edge of Forever. Valley of the Giants sounds like the Savage Curtain. Turnabout clearly is an early idea for Turnabout Intruder. I could see Machine X1004 as Return of the Archons.
The rest don't sound all that similar to made episodes. Regulation 11 could have worked as an episode, except they never could have had an episode without Spock. Passengers for Dimos isn't too bad either. I wonder why it never got adapted considering they made Turnabout Intruder, after all.