Line your kitchen counter or baking sheets with parchment paper.
Add white melting chocolate, sweet baking chocolate, and semi-sweet chocolate chips to a slow cooker. Set to LOW for 1–2 hours, stirring occasionally to prevent burning.
Stir the melted chocolates together until fully combined.
Add the salted, unsalted, and cocktail peanuts to the slow cooker. Mix thoroughly to coat the nuts in chocolate.
Switch the slow cooker to WARM or turn it off, leaving the crock inside the housing.
Scoop small mounds onto the parchment paper using an ice cream scoop or tablespoon.
Let the clusters set for about 1 hour until firm.
Once set, store in an airtight container.