Preheat your oven to 350°F (175°C).
In a mixing bowl, combine the softened cream cheese, ranch dressing, and blue cheese dressing. Mix until smooth and well combined.
Stir in the shredded chicken and buffalo sauce until everything is evenly coated.
Fold in 3/4 cup of the shredded cheddar cheese and half of the chopped green onions, if using.
Transfer the mixture to a baking dish and spread it evenly.
Top with the remaining 1/4 cup of shredded cheddar cheese.
Bake in the preheated oven for 20-25 minutes, or until the dip is bubbly and the cheese is melted.
Remove from the oven and let it cool slightly before serving. Garnish with the remaining green onions, if desired.