Since Sodium Iodide is not very stable, particularly in solution and KI is not stable for much longer, I would suggest you consider that they are present as Iodates to some extent.

Also, I have read one report where the catalyst is present in the developer or even coated to give an even distribution when the dye bleach is kicked off. I believe it might be in the developer, but I doubt if it could be reliably coated unless there was a mild ballast of some sort. Of course, then again, many have gotten good results with Dektol, so the reports of it being in the developer may be just reportage or commentary for patent purposes, disclosing other routes to block patents.