The GRG World Supercentenarian Rankings List is used by the GRG to track the oldest validated living persons, plus those recently deceased. It is a rename of the GRG "Table E" which dates to the 1990s. The rename in 2015 was to better-reflect on what this particular GRG table is used for.
Since January 28, 2000, the GRG Table E/WSRL has been in consultancy with Guinness World Records to produce validated living "Oldest Living Person" lists. In most years, Guinness publishes the "Top Ten".
In addition, Rejuvenation Research has been publishing the GRG Table E/WSRL since 2004.