Big Body's OG is funny with all that shyt their talking on the beginning . Now you know that shyt wasn't gonna all make the cut and all them extra triangle sounds too.
Eddie Kane OG was dope but not better then the one we got.
Fig Ro was probably from his Habits and Contradictions album due to the "Ball So Hard" adlib which he ended up using on Nightmare on Fig Street.
fukked Up sounds like it's from before Setbacks and from the old TDE days, probably when Kendrick was recording OD or even before then when Q wasn't too good lol.
SZA's tracks are from mostly from around the time she was doing CTRL but Back Together which sounds like it's straight out the 80's has to be from before CTRL era

I'm guessing it's from back when she was doing Z but I could be wrong. Her vault must be dope AF considering how hard she was working on CTRL and that a lot of songs didn't make that album.
Isaiah low key has one of the best songs released out of all of them.
With all this said, It's dope to hear some of these OG versions/Demos so we can get an ideal of all the work that goes into a song before we hear the official album version.