Had some promise in Toth
Dielman listed as the 9th best prospect on Walter's football

Toth was number 2 in their final list

Presume that Snead, McVay, and Kromer must have had an eye on JJ, and also seen his practice tape, too.
There's some hope there. I didn't see Eldenkamp or Blythe as that next level center.
Not to say that JJ is either

Toth, btw listed as having back surgery in July here in Los Angeles, and is rehabbing.

Feels more like JJ is a practice squad player, but I only briefly saw the Bengals this preseason.