Material Blend Workflow in UE5.4 Without Megascans?

I’m trying to create a material blend for use with the Mesh Paint tool, following the tutorial shown in this video. However, it seems that Megascans as shown in the video has been deprecated, and the same workflow is no longer available.

I’m using Unreal Engine 5.4 — how are people currently setting up material blending for mesh painting in the latest version? What’s the recommended way to do this now?