Preheat oven to 350°F (175°C).
Grease & line 9x5 loaf pan.
Wash, peel & shred carrots.
Whisk flour, baking powder, baking soda, spices, salt.
Beat sugars & oil until smooth.
Add eggs one at a time; stir in vanilla.
Fold wet into dry gently.
Fold in carrots, walnuts, raisins.
Pour into pan; bake 50–60 mins.
Cool 15 mins in pan, then on rack.
Beat cream cheese, add powdered sugar.
Mix in milk + vanilla, drizzle on cooled bread.