“2-yr mean citedness” is the OpenAlex field summary_stats.2yr_mean_citedness (CC0): mean citations per paper over a two-year window. It is a raw bibliometric field, not a journal rating, and is not used for default ranking.
Social Sciences100Medicine49Economics, Econometrics and Finance31Arts and Humanities26Business, Management and Accounting24Medicine: Public aspects of medicine1Social Sciences: Social history and conditions. Social problems. Social reform1