She has signature songs from various decades, not necessarily judged by how well known they are, but also by their use in movies, TV shows, documentaries, how many times they were covered, etc.
60s: I Got You Babe, Bang Bang
70s: Gypsies, Tramps and Thieves, Half Breed
80s: If I Could Turn Back Time
90s: The Shoop Shoop Song, Believe
Too bad she didn't have a huge hit after the early 2000s, though 'You Haven't Seen the Last of Me' has the potential of becoming one of her most iconic songs, after she's, you know, 'gone', which will probably and hopefully not happen for a long long time