“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.
Arts and Humanities129Business, Management and Accounting91Social Sciences77Decision Sciences75Engineering48Technology: Engineering (General). Civil engineering (General)1Technology: Technology (General)1