I appreciate the interest! Really, I only looked into this out of curiosity and a desire to correct some false but well-meaning information that I originally saw in the redpill folder from @RedpillBot. I saw the statistics were definitely in favor of the jews controlling the slave trade, but I couldn't find any reliable paper trail on the reasoning behind it.
I didn't dig any deeper than what my post tells. I tried parsing out family sizes, etc. but the census information is either very well hidden or non-existant. As I mention in my post, the 1860 American census doesn't even distinguish between jews and whites. It would take a much deeper dive into nooks and crannies of 19th century records that may not even be available this side of a paywall. I'm not willing to pay for it, much less to give a public library the time of day for it. What I found out satisfies me.