Preheat oven to 400°. Line a baking sheet with parchment paper.
In a large bowl, stir together flours, sugar, baking powder, salt, cinnamon, ginger, nutmeg, allspice, and cloves. Using a pastry blender, cut in cold butter until mixture is crumbly. (Alternatively, place three-fourths of flour mixture in the work bowl of a food processor; add cold butter, and pulse until mixture is crumbly. Return mixture to large bowl, and stir to combine with remaining flour mixture.)
In a small bowl, whisk together cold buttermilk, mashed banana, and vanilla. Add buttermilk mixture to flour mixture, stirring until a shaggy dough forms.
Turn out dough onto a lightly floured surface, and pat to 1-inch thickness. Fold dough into thirds, and roll to ¾-inch thickness. Using a 2½-inch round cutter dipped in flour, cut dough without twisting cutter, rerolling scraps once. Place biscuits 1 inch apart on prepared pan. Freeze until cold, about 10 minutes. Using a pastry brush, brush with melted butter.
Bake until golden brown, 16 to 18 minutes. Brush with melted butter; serve warm with sorghum syrup.
Recipe by Taste of the South at https://tasteofthesouthmagazine.com/banana-bread-biscuits/