The phrase "who's who" is commonly used to refer to a list of important or influential people in a particular field or area. However, there are several other synonyms that can be used to convey a similar meaning. Some examples include "movers and shakers," which refers to people who have the ability to influence others and effect changes; "heavyweights," which refers to people who are influential and powerful in their respective fields; and "big guns," which refers to people who have a significant impact on a particular industry or area. Other synonyms for "who's who" include "top dogs," "bigwigs," and "power players".