Here's a few examples:
https://di.community/di_custom/rep-standings/division-standings.php
https://di.community/di_custom/rep-standings/member-standings-15.php
https://di.community/di_custom/rep-standings/
Full Site - https://di.community
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This community custom coded theirs, but I was thinking of using Clubs alongside Power Contest to get near what they have. Besides posts, topics and reputation, they also included events and referrals.