Professional Christmas decorators often use a wide variety of different types of Christmas lights, depending on the effect they want to achieve. For example, some decorators might use multicolored mini lights for a bright and festive look, while others might use warm white LED lights for a more elegant and sophisticated feel. Additionally, some decorators might use larger, themed lights, such as giant candy canes or snowflakes, to create a more unique and personalized display. Ultimately, the choice of Christmas lights will depend on the individual decorator's personal preferences and the overall vision they have for their display.