For Hollywood, Pope was nominated in Lead, and Jim Parsons, Dylan McDermott, and Holland Taylor were nominated in Supporting.
Goldderby.com is an awards prediction/analysis site, and they predicted that Mantello would get nominated. There are 6 nominees, and they had him as #6. They didn't do very well in this particular category, though. Only 2 of their 6 proposed nominees made it -- Jim Parsons and Yahya Abdul-Mateen II for Watchmen.