The traditional: Ricardo's chocolate log
Chocolate Yule Log - Ricardo Cuisine

The simple but surprising: Christmas log with apple and maple
by Geneviève O'Gleman
Bûche de Noël aux pommes et à l’érable | Savourer x Mordu (radio-canada.ca)

The one that is out of the ordinary: No-bake Christmas log with chocolate, puffed rice and avocados from Marilou
No-Bake christmas log with chocolate, puffed rice and avocados - Trois fois par jour

The decadent: Stefano's chocolate-hazelnut-raspberry roll cake
Hazelnut chocolate and raspberry roulade - Stefano Faita

The rich and mellow: Yule log chai and citrus fruit from Patrice Demers
Bûche de Noël chai et agrumes | Mordu (radio-canada.ca)

For those who would rather encourage local pastries:
Fou Desserts (809, avenue Laurier Est)
Ôfauria (en ligne : ÔFauria | Livraison de pâtisseries en ligne | Montréal & Rive-Nord (ofauria.com))
Patrice Pâtissier (2360 Notre-Dame Ouest #104, Montréal QC H3J 1N4)
Pâtisserie Rhubarbe (1479, avenue Laurier Est)