For the Love of Cottage Cheese Salad

Name: For the Love of Cottage Cheese Salad
Ingredients: 1 lb. cherry or other mixed small tomatoes, halved or quartered if large; 3 small kirby or Persian cucumbers (about 10 oz. total), striped with a peeler, sliced into ¼-thick rounds; 4 scallions, white and green parts separated, thinly sliced; 1½ tsp. kosher salt, divided, plus more; Freshly ground black pepper; ½ bunch radishes (about 8 small; 5 oz. total), grated on the large holes of a box grater; 1 16-oz. container cottage cheese, preferably large curd, 4% milk fat or higher; 3 Tbsp. distilled white vinegar, divided; 2 Tbsp. extra-virgin olive oil, plus more for drizzling