Top of charts is a phrase used to describe something that is currently very popular or successful. There are many synonyms for this phrase, including number one, best selling, highest rated, most popular, and chart topper. These terms are often used interchangeably to describe products such as music, films, books, and TV shows. Being at the top of charts is considered an important achievement, and it often leads to increased exposure and success. It is important for businesses and artists to strive to reach the top of charts, as it is a strong indication of consumer interest and market demand.