The Identity Absorption chart on the main Sincera Dashboard has been updated to only include identifiers that have a deploy of 300 or more publisher installs.
Why change the chart methodology? Primarily because there were a few identity providers that had a very small footprint, but high absorption on a handful of sites, which created confusion for users to see them at the "top" of the chart.
The goal of Identity Absorption, as well as the Top Identifiers chart, is to provide an insight on the most widely used identifiers. Absorption continues to track which identifiers are picked up by SSPs, and Top Identifiers continues to track which identifiers are deployed by publishers.