Top of the World Hwy is correct. I generally stop at the AST Post in Tok and ask for the latest road report before I head over to Dawson City.
I have not driven the Hwy up to Inuvik however I led a group of 10 friends from around the US and Canada on a motorcycle riders tour of Alaska years ago. Two of them split off and rode the Hwy north to Inuvik and back. At that time it was a challenge on a touring motorcycle but they survived the adventure.
The Haul Road to Prudhoe Bay I have driven half way. It was a fun one day drive. Roads were gravel with a couple experimental paved areas to see how they would hold up. Mosquitos were terrible above the Artic Circle. We got out of the rig at the Circle to have a lunch break and the blood suckers drove us back into the Jeep.