Which non-stars can rise up for the Raptors this season

There are lots of interesting under-the-radar names on the Raptors this season:

Fred VanVleet (everybody knows him already, but he did wild things in the playoffs), OG Anunoby (unsure what his ceiling is just yet), Stanley Johnson (maybe we've seen most of what he can do already?), Rondae Hollis-Jefferson (former Net), Chris Boucher (did huge things in the G League last season), etc.

Some of these guys, or other players I didn't mention, are going to have to raise their profiles as they support Kyle Lowry, aging Marc Gasol, and of course young budding star forward Pascal Siakam.