Most any type of bread will work as long as it has a firm texture and has been dried properly. Using moist bread will result in a soggy stuffing. Some good bread choices are listed below:
White, firm textured sandwich bread - Wheat - Whole Grain - French - Italian - Rye - Sourdough - Cornbread
To properly dry the bread, spread the cubes out on baking sheets and allow to set out overnight to dry or bake in an oven at 275°F for approximately 20 minutes or until cubes are dry. See How to Make Stuffing
for step-by-step instructions.