Slice the cucumbers into thin rounds, about 1/8-inch thick. A mandoline makes this easy and even.
Place the cucumber slices in a colander set over a bowl. Sprinkle with the salt and toss gently. Let sit for 10 minutes to draw out excess moisture.
After 10 minutes, pat the cucumber slices dry with a clean kitchen towel or paper towels. This step is key for a creamy, not watery, salad.
In a medium bowl, whisk together the softened cream cheese, sour cream, and lemon juice until smooth and creamy. Season with a pinch of black pepper.
Add the dried cucumber slices, chopped dill, and 2 tablespoons everything bagel seasoning to the bowl. Toss gently until the cucumbers are evenly coated.
Taste and adjust seasoning if needed. Transfer to a serving dish and sprinkle with a little extra everything bagel seasoning and fresh dill. Serve immediately or refrigerate for up to 1 hour for a colder salad.