To make the crust, process 18 cookies in a food processor until it makes fine crumbs, 30-45 seconds, making about 1 ½ cups of crumbs.
Transfer Oreo crumbs to a small bowl, add melted butter, stir until thoroughly combined. Press mixture into the bottom of an 8 or 9-inch spring form pan, then set aside.
In a saucepan over medium-low heat, melt white chocolate and ¼ cup of the heavy cream, stirring occasionally. Remove chocolate from heat to cool.
In the bowl of a stand mixer fitted with the paddle attachment, beat cream cheese on medium speed for 2 minutes or until softened, scraping down the bowl one or two times.
Add the white chocolate mixture, 1 cup of sugar, the vanilla extract, and salt. Beat mixture until fully incorporated, 1 minute.
Add remaining whipping cream to a separate bowl of a stand mixer fitted with the whisk attachment. Whip cream on medium-high speed until soft peaks form, about 2 minutes.
With the mixer running on low speed, slowly add the remaining ¼ cup of sugar. Increase speed to high and whip until stiff peaks form, 45-60 seconds.
Coarsely chop 10-12 Oreo cookies, set aside.
Fold half of the whipped cream into the cheesecake mixture once incorporated fold in the remaining whipped cream and chopped Oreo cookies.
Spread mixture into pan, cover and refrigerate cheesecake 4-6 hours.
Prior to serving garnish cheesecake with additional whipped cream and the remaining 5-6 Oreo cookies, halved, or coarsely chopped.