Lemda Expression and its similar notations

namespace SampleApp
{
    class Employee
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public int Age { get; set; }
    }

    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            List<Employee> list = new List<Employee>(){
                new Employee() { FirstName="Himanshu", LastName="Manjarawala", Age=30},
                new Employee(){ FirstName="Hetal", LastName="Sangani", Age=26},
                new Employee(){ FirstName="Viral", LastName="Sangani", Age=32},
                new Employee(){ FirstName="Rajesh", LastName="Patel", Age=29},
                new Employee(){ FirstName="Nehal", LastName="Thakkar", Age=30}
            };

            //Lemda notation
            var n = list.Where(o => o.FirstName.StartsWith("H"));
            //Notation using delegate
            var d = list.Where(delegate(Employee o) { return o.FirstName.StartsWith("H"); });
            //Notation using Func<> delegate
            var f = list.Where(delegate(Employee o) { return MySelect(o); });

            foreach (Employee o in n)
            {
                System.Diagnostics.Debug.Print("Lemda: [ FirstName:{0}, LastName:{1}, Age:{2} ]", o.FirstName, o.LastName, o.Age);
            }

            foreach (Employee o in d)
            {
                System.Diagnostics.Debug.Print("Delegate: [ FirstName:{0}, LastName:{1}, Age:{2} ]", o.FirstName, o.LastName, o.Age);
            }

            foreach (Employee o in f)
            {
                System.Diagnostics.Debug.Print("Func<> Delegate: [ FirstName:{0}, LastName:{1}, Age:{2} ]", o.FirstName, o.LastName, o.Age);
            }
        }    
    }
}