Darth Sidious was definitely referred to in the PT.
I wasn’t about to double check, haha, thanks.
He’s referred to as “Lord Sidious” by the Nemodians many times in TPM, and by Dooku in AOTC. I know this for sure because in my edit Dooku is a Jedi and he warns Obi-Wan of a Sith controlling the Senate
In ROTS Grevious, Nute Gunray, and Yoda all call him Lord Sidious. Yoda also calls him Darth Sidious when they first face off in his office.
Yes