“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.
Medicine94Computer Science28Engineering15Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine1Technology: Technology (General): Industrial engineering. Management engineering: Information technology1