Nope. The 1920 s was damaged after release from the mint. If the cut had been on the planchet (the disk of metal that a coin is struck on) before striking, you would see the edges of the cut as flat, not raised. The 1934-D appears to be normal, the streak pattern you see would be natural toning caused by the metal reacting with gases in the air. The 1957-D shows corrosion, most likely from being buried in the ground. Welcome by the way!
The '20s looks like wire snips got it. The '34 is just toning often referred to as 'woody' . The last one looks like it sat in battery acid or something else highly acidic.
