I've now put Scott Duncan on my database of Final Games, Nottingham Forest v Barnsley, July 2020, source Soccer Base. Correct me please if this is wrong.
As regards referees coming on and off the list (WelshexRef), I note that Darren Handley is still officially on the list, despite the fact that he didn't referee an EFL game last season. So unless he's doing a 'will he, won't he' act again, I think his name will also be missing when the list of officials is published, hopefully towards the start of next season. I'm not sure whether James Adcock was still on the payroll as a SG2, but I expect his name to be missing from the new list as well.