Let the cream cheese and goat cheese sit at room temperature for about 15 minutes so they soften slightly.
Transfer them to a large bowl and beat with an electric mixer on low speed until smooth and creamy.
Add the grated cheddar, lemon zest, garlic powder, onion powder, and black pepper. Mix until everything is well combined.
Add the chopped parsley and dried cranberries and fold them in with a spatula.
Taste and add salt only if needed, keeping in mind the natural saltiness of the cheddar and goat cheese.
Cover the bowl and refrigerate the mixture for at least 1 hour, so it firms up and becomes easier to shape.
Place two sheets of plastic wrap on the work surface in a cross shape. Transfer the cheese mixture to the center and wrap it tightly.
Shape the mixture with your hands into a cone with a wide, stable base and a well-defined tip.
Keep the cone wrapped in plastic and refrigerate again for at least 1 hour, or until firm.
Finely chop the parsley for the decoration.
Carefully remove the plastic wrap and place the cheese ball on a serving plate.
Cover the entire surface with parsley, gently pressing it onto the cheese so it adheres.
Scatter the pomegranate seeds over the surface like small Christmas ornaments.
Use a small star-shaped cookie cutter to cut a star from the slice of cheddar or scamorza. Carefully insert a toothpick into the bottom of the star and place it on top of the tree.
Keep the Christmas Tree Cheese Ball refrigerated until ready to serve.
Serve with crackers, crostini, or breadsticks.