At certain times we want a single menu entry that represents a set of UBlueprintNodeSpawners (generally when all those UBlueprintNodeSpawners wrap the same UField). We do this to keep the menu less jumbled, and instead use the drag/drop action to present a sub-menu to the user (so they can pick the the node type that they want). We do this with both delegates and variable nodes (where the user can pick a getter vs. a setter, etc.).