Nachos with Vegan Queso and Black Beans

Name: Nachos with Vegan Queso and Black Beans
Ingredients: 2 tablespoons vegetable oil; 1/2 large white onion, finely chopped; 1 large clove garlic, minced; 1/2 teaspoon ground cumin; Kosher salt and freshly ground pepper; 1 15.5-ounce can black beans, drained and rinsed; 1 tablespoon fresh lime juice, plus wedges for serving; 1/4 cup finely chopped fresh cilantro, plus more for topping; 1 10-ounce bag tortilla chips; 1 10-ounce can diced tomatoes and green chiles; 2 7-ounce bags shredded vegan cheese; 3/4 teaspoon chili powder; Shredded lettuce, pico de gallo, guacamole, sliced black olives, pickled jalapeños and chopped onion, for topping