This article goes deeper into the results and explanation of where in the production process the lead is likely to increase (of course both lead and cadmium are naturally occurring in the soil).
As a side note, I noticed Trader Joe's brand mentioned in both articles and while several provided comment in this article, Trader Joe's didn't respond. I find it ironic that so many people have so much trust in Trader Joe's yet they don't seem particularly interested.
https://www.consumerreports.org/heal...e-a8480295550/