Here is my Québec List per structure:
ALBATROS
Tyler Médina G
BLIZZARD
Natan Grenier D
Mathys Lapointe A
Mael Lavigne A
CANTONNIERS
Louis-Felix Charrois G
Jérémie Dumas D
Eloi Bourdeau D
Ethan Gauthier A
Elie Baillargeon A
Lewis Gendron A
CHEVALIERS
Theo Lemieux D
Émile Duquet A
Elliott Simard A
ELITES
Mivil Tremblay G
Vincent Collard A
ESTACADES
Isaac Fecteau D
Alexis Jacques D
Evan Courtois A
FORESTIERS
Maxence Albert D
Mathis Ouellet A
Matthew Bolduc A
GAULOIS
Samuel Kingsey D
Nathan Baril A
Chad Prepszl A
Mikaël Lemay A
GRENADIERS
Etienne Morin D
Jesse Carrière D
Gerry Watson A
Vincent Gauthier A
Thomas Hébert A
Lou-Olivier Charland A
INTRÉPIDE
Nicolas Bilodeau D
Emile Perron D
Anthony Clutchey D
Christopher Talbot A
Alexis Bourque A
Justin Julien A
LIONS
Kyle Hagen G
Noah Razon D
Denver Damphousse D
PHENIX
Vincent Durand A
RIVERAINS
Marc-Olivier Beaudry D
Pierre-Marc Minville D
Mathieu Weber D
Mathieu Cataford A
Zackary Coutu A
ROUSSEAU-ROYAL
Daniel Heroux G
Jano Zambakdjian D
Mathys Laurent D
Olivier Savard D
Loic Goyette A
Cristiano Spadafora A
Vince Elie A
Sacha Trudel A
VICKINGS
Antoine Lagacé D
Feel free to add anyone else you see. I realize that we are far away from Draft Day!
I'd add a few guys on your list, but you've got most of them.
For Blizzard, Alex Mercier (first round guy imo) is probably the top guy with Nathan Grenier. There is also Emmanuel Vermette who should be at least a mid round pick, and Lauzier (G), Desbiens (FWD) and Theberge (D) are pretty decent prospects.
For Cantonniers, Connor Macey should be a mid round pick as well in a year, he's a big guy who skates well and can shoot the puck. I feel like more guys will emerge from that team, a lot of small skilled and smart forwards that could develop and improve massively, + Magog and Triolet always develop their players well.
For Chevaliers, Xavier Daigle might be their best prospect with Duquet and Simard, should all be top 3 round guys. I like Giroux and Lemieux as well, maybe Boucher in net could be a draft pick too.
For Elites, I low key really like Flageole, but he's pretty small. Could be a surprise.
For Estacades, they've got quite a few decent guys that should be later round picks like Elliot Robert, Benjamin Brunelle or Kyle Bordeleau.
For Forestiers, Lauzon could be interesting if he improves his skating, and I really like Arsenault, don't know how good he can be though, very skilled and smart.
For Gaulois, I'd add Mathis Cyr, pretty good two-way D, should get picked somewhere.
Phenix actually might have the best defenseman in Quebec in Olivier Beaulieu, as well as one of the top goalies in Fernandez. Beaulieu is a great skater who controls the play with high-end skills, very good offensively but didn't have enough support on his team. Low key really like Lalancette too who played for Lanaudiere, very smart and smooth player.
For CCL, I'd add Maxime Lauzon as a solid defenseman who should go in the first half of the draft. Can move the puck and pretty smart. Stravrianeas could be a surprise too, elite hands.
For Rousseau-Royal, I'd add Beck Majdell, very toolsy defenseman.
Vikings have two potential high-end forwards in Nathan Ethier and Maxime Coursol (top 3 rounds potential).