Add cream cheese, sour cream, confectioners’ sugar, meyer lemon zest and juice, vanilla and salt to the bowl of a stand mixer fitted with the paddle attachment (you can use a hand mixer here too). Beat on medium until smooth (about 4 minutes). Using a spatula, press the cream cheese mixture through a fine mesh strainer into a clean bowl, then divide among the prepared molds. Fold the cheesecloth over top to cover any of the exposed mixture.