What are these stains on clean clothes fresh out of washer. (No pens or inks in pockets).

I have so many clothes that have been ruined because they come out of the washer with weird blue-ish/gray-ish stains . I know the stains look black on the red dress, but it's because of the contrast. But if you look at the other pictures, you'll see blue-ish/gray-ish stains.

This is what I use: ALL detergent (clear) Downy beads (white)

And at times I add baking soda and white vinegar.

Thanks in advance.