Combine pine nuts, mint, one-quarter of garlic, and orange zest in bowl; set aside for serving. Heat oil in Dutch oven over medium heat until shimmering. Add onions, celery, ½ teaspoon salt, and ¼ teaspoon pepper and cook until vegetables are softened, about 5 minutes. Stir in thyme, pepper flakes, and remaining garlic and cook until fragrant, about 30 seconds.

Stir in wine and reserved tomato juice, bring to simmer, and cook until reduced by half, about 4 minutes. Stir in tomatoes, clam juice, raisins, and capers, return to simmer, and cook until flavors meld, about 15 minutes.

Season swordfish with salt and pepper. Add swordfish to pot and spoon some cooking liquid over top. Bring to simmer and cook for 4 minutes. Off heat, cover and let sit until swordfish flakes apart when gently prodded with paring knife, about 3 minutes. Season with salt and pepper to taste. Serve, sprinkling individual bowls with pine nut mixture.