compare two lists of objects by the name of their classes

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace _03_CompareByClass
{
    class ChooseByClass
    {
        static void Main(string[] args)
        {
            List<int> first = new List<int>() { 3, 6, 8, 0, 2, 7, 1, 8, 9, 4 };
            List<string> second = new List<string>() { "a", "b", "c", "d", "e", "f", "g", "h", "i", "j" };
            Comparer<List> comparer = new Comparer<List>();
            Console.WriteLine(comparer.Compare(first, second));
        }
    }
}

public class Comparer<T>
    {
        public int Compare(T a, T b)
        {
            if (a.GetType() == b.GetType())
            {
                return 0;
            }
            else