These data are for an article published in the Journal of the Medical Library Association. It includes the top 30 cardiac and cardiovascular systems journals based on their IF in the year 2019. Variables include the Impact factor and the Eigen Factor for the journal and the following values for each Editor in Chief (EiC): number of commentaries published, number of commentaries for which the EiC was the first author, total number of publications, and total number of publications for which the EiC was the first author. The number of commentaries published was restricted to the EiC’s journal, whereas total number of publications included all items published regardless of the journal. Commentaries were defined as any article written by the EiC published in their own journal that specifically said “no abstract” in PubMed.