Garlicky White Pizza with Mozzarella and Ricotta

Name: Garlicky White Pizza with Mozzarella and Ricotta
Ingredients: 1 recipe Pizza Dough , or 1 to 1 1/4 pounds store-bought pizza dough; 8 ounces fresh mozzarella cheese; 1 cup whole-milk ricotta cheese (about 8 ounces); 1 ounce Pecorino Romano or Parmesan cheese (1/2 cup firmly packed freshly grated or 1/3 cup store-bought grated); 1 large clove garlic; 2 tablespoons olive oil; 1/4 teaspoon kosher salt; 1/4 teaspoon red pepper flakes, plus more for garnish; 3 small sprigs fresh oregano; All-purpose flour, for dusting