“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 Humanities34Psychology12Social Sciences11Language and Literature: Philology. Linguistics: Language. Linguistic theory. Comparative grammar: Comparative grammar1Language and Literature: Philology. Linguistics: Language. Linguistic theory. Comparative grammar: Semantics1