Instant Pot Potato Corn Chowder

Name: Instant Pot Potato Corn Chowder
Ingredients: 2 cups Honey Baked Ham (Chopped); 3 Tablespoons Olive Oil (Extra Virgin); 2 Yellow Onions (Finely Chopped); 2 bulbs Garlic (Minced); 4 cups Low-Sodium Chicken Broth; 3 cups Russet Potatoes (Peeled; Cubed); 2 stalks Celery (Chopped); 3 Carrots (Peeled; Sliced); 3 cups Frozen Sweet White Corn; 1 teaspoon Dried Thyme; 1/2 teaspoon Salt; 2 teaspoons Black Pepper (Freshly Cracked); 1 Bay Leaf; 1 cup Heavy Whipping Cream; 1 generous Tablespoon Corn Starch; 1 cup Sharp Cheddar Cheese (Shredded); 1/2 cup Green Onions (Sliced)