French Onion Soup with Homemade Fullblood Wagyu Beef Stock

Name: French Onion Soup with Homemade Fullblood Wagyu Beef Stock
Ingredients: 1 PACKAGE Double 8 Cattle Company Fullblood Wagyu Soup Bones (thawed); 3 Large Carrots (large diced); 3 STALK Celery (large diced); 1 Yellow Onion (large diced); 1 Red Onion (keep skin on, large diced); 2 Leeks (large diced); 5 SPRIG Thyme (fresh; 3 quarts Cold Water; 1 ounce Unsalted Butter; 1 ounce Grapeseed Oil; 4 Sweet Onions (julienned); 3 Garlic Cloves (chopped); 2 SPRIG Thyme (fresh); 2 Bay Leaves; 1 teaspoon Kosher Salt; 1/2 teaspoon Freshly Ground Black Pepper; 8 ounces Red Wine (chef recommends Pinot Noir); 2 quarts Fullblood Wagyu Beef Stock; 1 teaspoon Worcestershire Sauce; 1 teaspoon Red Wine Vinegar; 1 Baguette (1/4-inch-thick slices on a biased cut); 6 ounces Gruyere (grated); Kosher Salt (to season); Freshly Ground Black Pepper (to season)