I thought this last year, because the list of submissions seemed off then too, but I sort of wonder if Fox canvasses their actors as to who wants to be put forward each year and if they don't get a response just leave them off the list since they can always put themselves forward separately anyway. If Darren and/or his management team aren't on the ball enough to respond to that sort of query from the production company by whatever deadline they may give then it might explain why he gets left off the official submission list only to submit himself later.