Hello. I have several japanese maple saplings in pots, that I dug up from the garden after they self seeded.

They have all developed some sort of disease - white spots and crinkled up leaves. Some are only affected on the older leaves and the newer leaves are fine. I enclose some photos - they are of three different saplings, as I’m not sure if it’s the same issue with all three.

Any help identifying the problem(s) would be much appreciated. Thank you!

Tree #1