Adjust an oven rack to the middle position and preheat the oven to 375℉. Spray the bottom of a 9 x 5-inch loaf pan with nonstick baking spray.
Shred the zucchini in the large holes of a box grater and toss with 2 tablespoons of brown sugar. Transfer to the strainer over a bowl and allow it to drain for approximately 30 minutes.
While the zucchini is draining, whisk the all-purpose flour, cake flour, baking powder, baking soda, cinnamon, nutmeg, ginger, cardamom, and salt in a medium bowl and set aside.
After the zucchini has drained, using your hands gently press to squeeze the remaining liquid. Mix the lemon zest thoroughly to coat the zucchini. Next, add the yogurt, pure vanilla extract, and lemon juice. Stir to combine and set aside.
Beat the white sugar and butter together with an electric mixer on medium-high until light and fluffy (5-7 minutes). Scape down the sides of the bowl as needed.
Add the eggs to the sugar/butter mixture, one at a time, beating well after each addition.
Mix the dry mixture & zucchini mixture, alternating: Add 1/2 of the flour mixture to the sugar/butter/egg mixture and stir until just incorporated. Add 1/3 of the zucchini mixture and stir to combine. Add half of the remaining flour mixture, and mix until just incorporated. Add half of the remaining zucchini mixture and stir until combined. Add the remaining flour mixture and stir until just incorporated. Fold in the remaining zucchini mixture, blueberries, and chopped nuts (if using).
Scrape the batter into the prepared loaf pan. Sprinkle the top with cinnamon or additional chopped pecans. Bake the loaf until golden brown, approximately 50 to 55 minutes, rotating the pan halfway through. The bread will spring back to the touch when ready.
When the bread is finished baking, remove it from the oven and allow it to cool for approximately 10 minutes before removing it from the pan and transferring it to a wire rack. Allow the bread to cool slightly before cutting into it. The bred can be stored wrapped in plastic wrap at room temperature for up to 3 days.