Place cream cheese and sugar in a large mixing bowl or the bowl of a stand mixer. Use a handheld electric mixer or the paddle attachment on mixer to beat cream cheese and sugar 2-3 minutes until smooth and creamy.
With mixer running, add eggs one by one beating well after each addition. Mix in milk, vanilla, and salt until smooth.
Scoop out 1/2 cup cream cheese filling and fold in cocoa and melted chocolate until smooth.
Pour half of remaining cream cheese filling over cooled crust and gently spread in an even layer. Set aside for a moment.
In a small bowl, mash raspberries and jam until smooth. Drop half of raspberry filling and half of chocolate mixture by the spoonful over cream cheese filling and use a knife to swirl into the cream cheese. Repeat layers with remaining cream cheese, raspberry filling, and chocolate filling and use a knife to swirl.
Bake cheesecake bars at 325F 25-30 minutes until cheesecake registers 145F. Allow bars to cool completely on a wire cooling rack, then transfer to fridge to chill 2 hours until completely cold.
When ready to serve, cut cheesecake into squares and serve chilled with additional raspberries on top. Enjoy!