Creamy Mushroom Soup With Chives

Name: Creamy Mushroom Soup With Chives
Ingredients: 3 tablespoons canola oil, divided; 1 small yellow onion, chopped; 3 cloves garlic, chopped; 8 ounces thinly sliced fresh cremini mushrooms (2½ cups), divided; 8 ounces shiitake mushrooms, stemmed and thinly sliced (2 cups), divided; 6 cups low-sodium vegetable broth; 2 medium russet potatoes, peeled and chopped; 2 teaspoons kosher salt; ¼ cup heavy cream; ¼ teaspoon freshly ground black pepper; 2 tablespoons chopped fresh chives; Crusty bread, for serving