My tomato plants were like that for years, and it was from dirty cages (I think). I kept transferring the blight, year after year to the plants. I got new cages and moved the plants to an uncontaminated area and it stopped. But it looks like a blight.
Did I get it?
*Edit*- @mauiinfinity I thought you knew the answer! lol. I thought this was a "test your knowledge" type of thing.
So, it looks like a typical blight to me. And you have several other plants around with it. I would get new cages, wash the dickens out of those pots, and relocate the plants next year if possible. For now, if it is blight, not much you can do.