Chili Bowl Burger Sliders

Name: Chili Bowl Burger Sliders
Ingredients: 2 pounds ground beef, 90/10; 1 pound ground pork; 2 tablespoons chili powder; 2 tablespoons ground cumin; 2 tablespoons minced onion flakes; 1 jalapeno, seeded and finely diced; Salt and freshly ground black pepper; Canola oil spray; 3 tablespoons olive oil; 1 white onion, chopped; 3 tablespoons chopped garlic; 2 tablespoons tomato paste; 1 tablespoon chopped fresh oregano; 1 (28-ounce) can crushed tomatoes; 1 (15-ounce) can kidney beans, drained; 1 1/2 to 2 cups shredded Cheddar, divided; 12 slider buns