Unity URP Custom Lit ShaderGraph - BlinnPhong (Wire in the inputs, then add Diffuse + Specular)

CustomLighting.hlsl

#ifndef CUSTOM_LIGHTING_INCLUDED
#define CUSTOM_LIGHTING_INCLUDED

/* IN(5): SpecColor(4), Smoothness(1), WPos(3), WNormal(3), WView(3) */
/* OUT(2): Diffuse(3), Specular(3) NdotL(1) for toon ramp: point fltr +clamp mode */

void CalculateLights_half(half4 SpecColor, half Smoothness, half3 WPos, half3 WNormal, half3 WView,
                          out half3 Diffuse, out half3 Specular, out half NdotL)
{           
    Diffuse = 0;
    Specular = 0;
	NdotL = 0;
    #ifndef SHADERGRAPH_PREVIEW    
    Smoothness = exp2(10 * Smoothness + 1);  // WNormal = normalize(WNormal);    WView = SafeNormalize(WView);                                                         
	Light light = GetMainLight(); // Main Pixel Light
	half3 attenCol = light.color * light.distanceAttenuation * light.shadowAttenuation;

    Diffuse = LightingLambert(attenCol, light.direction, WNormal);     /* LAMBERT */         
    Specular = LightingSpecular(attenCol, light.direction, WNormal, WView, SpecColor, Smoothness); /*Blinn-Phong*/      
	NdotL = dot(light.direction, WNormal) * 0.5 + 0.5; // NdotL [-1..1] normalized [0..1] for toon ramp          
    #endif
}
#endif

/*  //---\\ADDITIONAL LIGHTS NEARBY//---\\
    int pixelLightCount = GetAdditionalLightsCount();
    for (int i = 0; i < pixelLightCount; ++i)
    {
        light = GetAdditionalLight(i, WPos);
        attenCol = light.color * light.distanceAttenuation * light.shadowAttenuation;   
        Diffuse += LightingLambert(attenCol, light.direction, WNormal);
        Specular += LightingSpecular(attenCol, light.direction, WNormal, WView, SpecColor, Smoothness);
    }

    // --- RUDIMENTARY SHADOWs   Keywords: _MAIN_LIGHT_SHADOWS_CASCADE && _SHADOWS_SOFT --- \\    
	float4 shadowCoord = TransformWorldToShadowCoord(WPos);        
	float shadowAtten = SampleShadowmap(shadowCoord, TEXTURE2D_ARGS(_MainLightShadowmapTexture, sampler_MainLightShadowmapTexture),
    GetMainLightShadowSamplingData(), GetMainLightShadowStrength(), false); 
*/

/*/////////////////////////////////////////////////////////////////////////////
//   ShaderLibrary Lambert and Phong lighting functions : in Lighting.hlsl   //
//                      Lighting Functions + PBL                             //
///////////////////////////////////////////////////////////////////////////////

half3 LightingLambert(half3 lightColor, half3 lightDir, half3 normal)
{
    half NdotL = saturate(dot(normal, lightDir));
    return lightColor * NdotL;
}

half3 LightingSpecular(half3 lightColor, half3 lightDir, half3 normal, half3 viewDir, half4 specular, half smoothness)
{
    float3 halfVec = SafeNormalize(float3(lightDir)+float3(viewDir));
    half NdotH = saturate(dot(normal, halfVec));
    half modifier = pow(NdotH, smoothness);
    half3 specularReflection = specular.rgb * modifier;
    return lightColor * specularReflection;
}

half3 LightingPhysicallyBased(BRDFData brdfData, Light light, half3 normalWS, half3 viewDirectionWS)
{
	half NdotL = saturate(dot(normalWS, light.direction));
	half3 radiance = lightColor * (lightAttenuation * NdotL);  
	half3 brdf = brdfData.diffuse;
    ....    
	return brdf * radiance;
}*/

Gradual Ramps. (Diffuse + Stepped Spec) * Ramp

Pure RAMPS!!! Toon + Stepped

And here are the [Files...] 54kb .shadergraph as .gif