Beat cold heavy cream and powdered sugar in a stand mixer with the whisk attachment until stiff peaks form, about 2–3 minutes. Transfer to another bowl and refrigerate.
Beat softened cream cheese, pumpkin purée, maple syrup, vanilla, cinnamon, and nutmeg until smooth, about 3 minutes. Scrape down the bowl as needed.
Gently fold the whipped cream into the pumpkin mixture with a rubber spatula until evenly combined and fluffy.
Transfer to a serving bowl. Garnish with caramel sauce and candied pecans if desired.
Serve immediately, or cover and refrigerate until serving.