And how do you measure journal and conference reputation? Conventional measures there also lean on citations, and journals have been known to do quite a bit of manipulation to get those scores up.
Start with Google Scholar's list of top publications: https://scholar.google.com/citations?view_op=top_venues, and detect self-citing and citing rings within the universe of these publications. Almost certainly the guy with the record for self-citing doesn't have a paper in any of the top publications.