Here's my take based on the information we have right now.
Huberdeau - McDavid - MacKinnon
Marchand - Crosby - Bergeron
Scheifele - Point - Marner
Couturier - O'Reilly - Stone
Theodore-Pietro
Chabot-Makar
Nurse/Morrissey-Doughty
Price
Fleury
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Line #1 - It would be intriguing to have Barzal on line #1 for an all-speed option. However, I think it's better to go with an equal caliber player that's a natural left winger in Huberdeau. Plus, this line will make mincemeat of the competition even if McDavid-MacKinnon hop onto the ice without a third linemate.
Line # 2 - No need to explain. GOAT line chemistry.
Line #3 - Point is a given. Marner is Canada's best natural RWer. Scheifele offers serious skill, jam, and leadership. This is the line that can be experimented with the most. I could easily see Tavares in there for experience + chemistry with Marner. Maybe Stamkos for chemistry with Point? I could even see Barzal for a faster line. Lots of choices but I personally think Scheifele should be on the team.
Line #4 - This is a must. They can shut down pretty much any line on the planet while being offensive threats. What a luxury.
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Defensive pairing #1 - I think this is a given. Chemistry, skill, and proven experience through Pietro. They've got it all.
Defensive pairing #2 - Makar is Team Canada's best defenseman. Simple as that. Chabot will fit with him nicely. He's got great hockey IQ, good skating ability, international experience, and can handle tough minutes if necessary. I think he's a defenseman that can mentally keep up with Makar and that's half the battle with such a skilled partner. I feel iffy about Toews as I think he's too much of a question mark at the international level. But it's not the end of the world if it happens.
Defensive pairing #3 - Doughty will be there. Proven international defenceman that's still good. They need leadership material in the d-core due to a younger second pairing. I'm not sure about which one from Nurse/Morrissey will make it. But both are fine and quite capable.
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Goalies - This is not a choice. It's all we've got.
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Random thoughts - There are only 2-3 question marks on this team. The rest come down to how they want to put together the lines, chemistry, and/or how specific players are doing in 2022.
I feel Tavares, Parayko, and Barzal are going to get a serious look. I wouldn't be surprised if 1-2 of them make it over the guys I listed.
But I don't think Tavares or Parayko have earned a spot. While Barzal is just stuck behind too much quality.