I think he has a good chance at being the 1st line center. Bo Horvat is matching all of the other centers in offensive stats and he's just as good if not better defensively than all of them.
It's tough to say what line Horvat will center, if he plays center during the tournament. Didn't Sutter have him on LW for a few games? And with how many centers team Canada has, I wouldn't be surprised if he was shifted. Laughton, Gauthier, McDavid, Reinhart, Lazar and Horvat all centers. I know Reinhart has been praised for being a player that can play all 3 forward positions and I also think Lazar has played some LW like Horvat.
I also read somewhere that the QMJHLs top line during the subway series was really good, I think it was Drouin - Gauthier - Mantha. While Gauthier isn't what would consider Canada's top centre prospect, you have to respect any line with Drouin on it is Canada's top line.
This is what I think the lines could end up looking like:
Speed and size. Gauthier and Mantha creating tons of space for Drouin because of their size.
Although Anderson is more of a third or 4th line guy, he gets elevated here to play with Knight's teammate Horvat. Horvat and Laughton are both good playmakers and finishers, having a guy who can retrieve Pucks for them makes this line work. Horvat and Laughton also work hard below the goal line. This could give teams nightmares just on their forehead alone.
Rychel and Anderson could easily switch lines here. Hudon has been a favorite for a lot of fans because of how hard he plays the game for his size. All players on this line are guys that have offensive games but are reliable defensively and are all plus skaters.
Looking at the roster like this, I have a tough time thinking both Petan and Shinkaruk make the roster in favour of another energy guys like Girard because of the skill already available on the other 3 lines.
A skilled "4th line". McDavid and Reinhart have been paired together in the past. Anyone on this line could be left of, solely for making a tougher, harder to play against 4th line. I think that's Sutters MO. But considering both your 2nf and 3rd line respectively are good enough in all areas of the ice, a purely talented offensive line could be huge in close games.