The 1st and 4th ones appear to be the same.
I believe the 3rd from the left is cloned from the 2nd from the left. Using MS Paint, I can displace the upper portion of either and match it to the other seamlessly. Note the change in the 3rd trail starting from the little tuft which matches the 2nd. In fact there’s a gap where the thinner cloud starts. Then the ground effect was copied from the 4th ( i.e. the rightmost. )