Preheat oven to 350°F. Spray a 13x9-inch baking pan with baking spray with flour or grease well with butter and flour. In a large bowl, whisk together flour, baking soda, cinnamon, ginger, nutmeg, cloves, and salt.
In a medium bowl, whisk together granulated sugar, oil, brown sugar, eggs, and vanilla extract.
Add the sugar mixture to the flour mixture. Whisk or stir just until combined; do not overmix. Stir in zucchini and raisins.
Spread the batter in the prepared pan.
Bake until a wooden pick inserted in the center comes out clean, about 30 minutes. Let cool completely in the pan on a wire rack before frosting.
Spread the cream cheese frosting on the cool cake. Garnish with chopped nuts or shredded coconut, if desired. Refrigerate for at least 1 hour (to allow the frosting to set) before slicing and serving.