Yes there are a few, but for every success you list, dozens of players who did not improve or actually fell in the draft can be listed. Just last year of the top of my head Ivan Rabb, Thomas Bryant, and Grayson Allen and dropped significantly
Oh, I was responding to your post that said "can you name me one time in history" so I did name one time in history... maybe you should correct that post to read "can you name me more than a few times in history" , and I might add, I was going for the "advanced to top three" as the original post asked for, but I could name DOZENS who improved from mid-late first, to lottery, and more than that who improved their draft stock period.