If you discount the SG2 appointed officials then the FL referees in order of merit should be Madley and Hicks followed by Breakspear, Drysdale, Coy and Bramall and then followed by Speedie, Purkiss,, Busby, Toner, Bell and S Oldham ( though as E Morecambe once famously said ) not necessarily in that order ) So who among the FL referees would you would expect to appear in that list and doesn't might be a very good guide as to who will get the League 2 Play Off Final.
None of the referees who are on the L2 play offs will get the final in case there is any 'carry over'.
I will be very surprised if the L2 play off final is not refereed by either Mr Hicks or Mr Madley, assisted by two of the assistants appointed to the L1 semi-finals first legs.
I think this quite a likely outcome with one as referee and the other as 4th presumably. Madley's career is well documented. I've seen Hicks a couple of times; nothing too wrong with his performances but pretty run of the mill I would have said.
If Backhouse and Edwards don't appear, presuming they are not injured, then I am surprised at that particularly Edwards.