It sure looks like aminopyralid damage, but since those herbicides were banned in 2009, I would wonder where that would have come from.
I'm just wondering if you received mulch or compost from some place where those substances could have been used? Composted or spoiled hay perhaps?
I would keep those plants out of the composter.
If the problem is molybdenum deficiency, increasing the pH with lime should increase the Mo availability to plants. There is a fine line between adequate Mo and potential Mo toxicity through consumed crops (by career, I am a scientist that has studied Mo in crops, and plant availability). I would not attempt to add Mo to a garden plot without a soil test that specifically looks at available Mo test levels, adequacy for plant nutrition, and specific supplementation requirements based on the soil test.