Preheat the oven to 350°F (175°C).
Drain most of the liquid from the pickle relish.
In a large bowl, combine the pickle relish, ground beef, fried onions, eggs, bread crumbs, smoked flavoring, and Worcestershire sauce. Mix lightly.
Using scissors, cut 6 bacon strips into small pieces and gently fold them into the meat mixture.
Gently mix in the cheese cubes until evenly distributed.
Shape the mixture into a loaf and place it in a 9x13 pan or on a baking sheet. Line with aluminum foil if desired for easier cleanup.
Lay the remaining bacon slices on top of the loaf.
Bake for 50-60 minutes, or until the internal temperature reaches 160°F (71°C) on a meat thermometer.
While the meatloaf is baking, mix the ketchup, maple syrup, and sriracha (if using) together.
Brush the glaze over the meatloaf and bake for an additional 5-10 minutes.