Script required to find swatches with specific RGB values then rename the swatch

Updated to try to help a bit more...

This will look for the swatches per your specs and then rename them. A layer will be created with your naming example.

It will also look at all of the lines and if the line color matches your specs, the line will be moved to the appropriate layer.

Final step is any empty layers will be deleted.

This might not be the most efficient code but it will get done what you are asking. Plus you can add in more specs as in if you change the line weight and formatting for a certain line type.... add it in to the proper section to further automate things.

I tried adding in comments to the code. Hope it helps!

#target illustrator-23
// Get the active document
var doc = app.activeDocument;
// Collect all of the swatches in the active document
var allSwatches = doc.swatches;
// Collect all layers in the active document
var allLayers = doc.layers;
// Collect all paths in the active document
var allPaths = doc.pathItems;
// Function to create a layer name
function createTheLayer() {
    var createLayer = allLayers.add();
    createLayer.name = String(allSwatches.name);
}
// Create a new layer for objects that don't match any of your specs
var notAssigned = allLayers.add();
notAssigned.name = "Not Assigned";
// Look through all of the swatches in the document
for (var i = 0; i < allSwatches.length; i++) {
    // Cut layer
    if (allSwatches.color.red == 255 && allSwatches.color.green == 0 && allSwatches.color.blue == 0) {
        allSwatches.name = "Cut Layer";
        createTheLayer();
    }
    // Crease
    else if (allSwatches.color.red == 0 && allSwatches.color.green == 153 && allSwatches.color.blue == 0) {
        allSwatches.name = "Crease";
        createTheLayer();
    }
    // Bleed
    else if (allSwatches.color.red == 0 && allSwatches.color.green == 127 && allSwatches.color.blue == 255) {
        allSwatches.name = "Bleed";
        createTheLayer();
    }
    // Dimensions
    else if (allSwatches.color.red == 0 && allSwatches.color.green == 255 && allSwatches.color.blue == 0) {
        allSwatches.name = "Dimensions";
        createTheLayer();
    }
    // Unprinted zone
    else if (allSwatches.color.red == 255 && allSwatches.color.green == 0 && allSwatches.color.blue == 255) {
        allSwatches.name = "Unprinted zone";
        createTheLayer();
    }
    // Lines
    else if (allSwatches.color.red == 0 && allSwatches.color.green == 0 && allSwatches.color.blue == 0) {
        allSwatches.name = "Lines";
        createTheLayer();
    }
    // Construction
    else if (allSwatches.color.red == 255 && allSwatches.color.green == 255 && allSwatches.color.blue == 0) {
        allSwatches.name = "Construction";
        createTheLayer();
    }
    // Corner datum
    else if (allSwatches.color.red == 0 && allSwatches.color.green == 255 && allSwatches.color.blue == 255) {
        allSwatches.name = "Corner datum";
        createTheLayer();
    }
    // 10mm cut-crease
    else if (allSwatches.color.red == 0 && allSwatches.color.green == 0 && allSwatches.color.blue == 255) {
        allSwatches.name = "10mm cut-crease";
        createTheLayer();
    }
    // 2 x 2mm perf
    else if (allSwatches.color.red == 254 && allSwatches.color.green == 191 && allSwatches.color.blue == 16) {
        allSwatches.name = "2 x 2mm perf";
        createTheLayer();
    }
}
for (var z = 0; z < allPaths.length; z++) {
    // Cut layer
    if (allPaths.strokeColor.red == 255 && allPaths.strokeColor.green == 0 && allPaths.strokeColor.blue == 0) {
        var targetLayer = allLayers.getByName("Cut Layer");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Crease
    else if (allPaths.strokeColor.red == 0 && allPaths.strokeColor.green == 153 && allPaths.strokeColor.blue == 0) {
        var targetLayer = allLayers.getByName("Crease");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Bleed
    else if (allPaths.strokeColor.red == 0 && allPaths.strokeColor.green == 127 && allPaths.strokeColor.blue == 255) {
        var targetLayer = allLayers.getByName("Bleed");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Dimensions
    else if (allPaths.strokeColor.red == 0 && allPaths.strokeColor.green == 255 && allPaths.strokeColor.blue == 0) {
        var targetLayer = allLayers.getByName("Dimensions");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Unprinted zone
    else if (allPaths.strokeColor.red == 255 && allPaths.strokeColor.green == 0 && allPaths.strokeColor.blue == 255) {
        var targetLayer = allLayers.getByName("Unprinted zone");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Lines
    else if (allPaths.strokeColor.red == 0 && allPaths.strokeColor.green == 0 && allPaths.strokeColor.blue == 0) {
        var targetLayer = allLayers.getByName("Lines");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Construction
    else if (allPaths.strokeColor.red == 255 && allPaths.strokeColor.green == 255 && allPaths.strokeColor.blue == 0) {
        var targetLayer = allLayers.getByName("Construction");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // Corner datum
    else if (allPaths.strokeColor.red == 0 && allPaths.strokeColor.green == 255 && allPaths.strokeColor.blue == 255) {
        var targetLayer = allLayers.getByName("Corner datum");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // 10mm cut-crease
    else if (allPaths.strokeColor.red == 0 && allPaths.strokeColor.green == 0 && allPaths.strokeColor.blue == 255) {
        var targetLayer = allLayers.getByName("10mm cut-crease");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
    // 2 x 2mm perf
    else if (allPaths.strokeColor.red == 254 && allPaths.strokeColor.green == 191 && allPaths.strokeColor.blue == 16) {
        var targetLayer = allLayers.getByName("2 x 2mm perf");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    } 
    else {
        // No matching properties per your specs
        var targetLayer = allLayers.getByName("Not Assigned");
        allPaths.move(targetLayer, ElementPlacement.PLACEATEND);
    }
}
// Loop backward through layers and delete any empty ones
for (var xy = allLayers.length - 1; xy >= 0; xy--) {
    if (allLayers[xy].pageItems.length == 0 && allLayers[xy].layers.length == 0) {
        allLayers[xy].remove();
    }
}