Haven't had a chance to participate in this thread, since I don't study these effects. But your question brought to mind something I think is worth sharing...

A variable that I think affects the access of fresh developer to an image being developed, and which I think might impact the edge effects...

Using D-76 on TMY-2 I once made a mistake and flipped one sheet over in the developer. I had image artifacts on a pictorial negative developed in contact, emulsion-to-emulsion, with a step wedge exposed test sheet. There was a ghost image of the step wedge on my pictorial negative. I assume this is because the high density patches exhausted the developer locally.

So I would say developing stacks of sheets in trays - might - enhance edge effects.