I've searched the Taxonomist page to see who won the badge for certain tags, and was unable to find the winners. How about on the Tag Top Users page you show the winner of the Taxonomist badge for that tag, or the creator of it?
Sorry, a downvote for me against this proposal purely as I don't see what value adding the winner of the badge would add to the Top Users page, or indeed any other page in the /tags area. It seems more of a "vanity" for the recipient of the taxonomist badge than something that's actually of use.
Update: You can determine what tag(s) you've received the taxonomist badge for by clicking the taxonomist badge at the bottom of your profile.