Blackened Catfish and Smoked Gouda Grits

Name: Blackened Catfish and Smoked Gouda Grits
Ingredients: 2 cups water; 2 cups heavy cream; 2 teaspoons kosher salt, divided, plus more as needed; 1 cup yellow corn grits, preferably Bob’s Red Mill; 1/4 cup shredded gouda cheese; 1 tablespoon smoked paprika; 1 teaspoon garlic powder; 1 teaspoon dried oregano; 1 teaspoon cayenne pepper; 1/2 teaspoon ground black pepper, plus more as needed; 1/2 teaspoon packed light brown sugar; 1 1/2 pounds catfish filets; 1/2 cup all-purpose flour; 3 tablespoons olive oil, divided