My suggestion it is to remove the table in that page (maybe a different pages to show it) and replace with a graphic of a podium to show the only first 3-5 best contributors of the month.
In that way we add a little bit of gamification in the project, few examples:
- https://cdn2.slidemodel.com/wp-content/uploads/4013-01-flat-powerpoint-template-5.jpg
- https://pixabay.com/static/uploads/photo/2015/11/24/22/16/podium-1060918_960_720.png
We can show in the podium his avatar and profile link.