Preheat the oven to 350°F (175°C). Grease a 9×5-inch loaf pan or line it with parchment paper.
In a large bowl, whisk together the pumpkin puree, grated zucchini, eggs, unsweetened applesauce, melted coconut oil, and vanilla extract until smooth and well combined.
In a separate bowl, sift together the whole wheat flour, oat flour, baking soda, baking powder, salt, cinnamon, nutmeg, ginger, and cloves.
Gradually add the dry ingredients to the wet ingredients, stirring gently until just combined. Do not overmix.
Pour the batter into the prepared loaf pan and smooth the top with a spatula.
Bake for 55 to 60 minutes, or until a toothpick inserted into the center comes out clean.
Remove the bread from the oven and let it cool in the pan for 10 minutes.
Transfer the bread to a wire rack to cool completely before slicing.