That’s a tough one , starting with earlier hits like “Don’t be Cruel “(Elvis) , “She loves you” (Beatles which by the way is the perfect pop song ) “I get around “(Beach Boys ) to later hits like “Take it Easy “ (Eagles ) , “Thats All “ (Genesis ) , (another perfect pop song) , “Beat It “& “Billie Jean” (MJ) , “Free Falling “ (Tom Petty).
I will say that “One Headlight “ (Wallflowers ) is probably the last great pop song that comes to mind .