Create an Unlit Shader

Hello. I’m on Unity 5 following a tutorial, but I’ve gotten to the creating a shader part and it says to do an Unlit Shader.
I have done exactly what appears in the image but creating the Shader does not display that list of options and just creates a custom Shader. How can I create an Unlit shader?

Here is the code for the shader I want to create:

Shader "Unlit/CircleShader"
{
    SubShader
    {
        Tags { "RenderType"="Opaque" }
        LOD 100

        Pass
        {
            Zwrite on
            Blend SrcAlpha OneMinusSrcAlpha
            AlphaToMask on

            CGPROGRAM
            #pragma vertex vert
            #pragma fragment frag
          
            #include "UnityCG.cginc"

            struct appdata
            {
                float4 vertex : POSITION;
                float2 uv : TEXCOORD0;
                float4 col : COLOR;
            };

            struct v2f
            {
                float2 uv : TEXCOORD0;
                float4 vertex : SV_POSITION;
                float4 color : COLOR;
            };

            v2f vert (appdata v)
            {
                v2f o;
                o.vertex = UnityObjectToClipPos(v.vertex);
                o.uv = v.uv;
                o.color = v.col;
                return o;
            }

            fixed4 frag (v2f i) : SV_Target
            {
                fixed4 col = i.color;
                float2 newUV;
                newUV.x = i.uv.x * 2 - 1;
                newUV.y = i.uv.y * 2 - 1;
                if ((newUV.x*newUV.x + newUV.y*newUV.y) > 1) {
                    col.a = 0;
                }
                return col;
            }
            ENDCG
        }
    }
}

is it this tutorial?
http://www.learntomakegame.com/2017/01/08/to-create-a-game-tsum-tsum-style-from-zero-a-better-lines/

since you already have full shader code,
it doesn’t matter which template you pick (Standard, or Unlit, or Image effect shader) from those
(just replace the shader template code with yours)

But if I make a custom one instead of a circle (which is what should appear), a black square remains

works for me: