I realized as I came onboard, all of the Kudos / Accepted Solution leaderboards had been hidden away. Normally links to these are found on the top kudos/recent posts components, but that isn't the case today. So while a few of you may have seen these before, figured it may be something new for many. I'll see which others I can dig up, and add to the list as I find them. *We'll of course work to add these in the future where they belong.
Unanswered Topics - All of Community
https://community.upwork.com/t5/forums/unansweredtopicspage/
Recent Messages - All of Community
https://community.upwork.com/t5/forums/recentpostspage/post-type/message
Recent Messages - Specific Board (Change "freelancers" to the board you want to use)
https://community.upwork.com/t5/forums/recentpostspage/board-id/freelancers/post-type/message
Top Kudos - by Author
https://community.upwork.com/t5/kudos/leaderboardpage/timerange/one_month/tab/authors
Top Kudos - by Board
https://community.upwork.com/t5/kudos/leaderboardpage/timerange/one_month/tab/posts
Specific Boards - You can narrow it by a specific section of Community by changing the NodeID ("freelancers" in this URL)
https://community.upwork.com/t5/kudos/leaderboardpage/board-id/freelancers/timerange/one_month/tab/T...
Specific Category (and any sub-sections within it)
https://community.upwork.com/t5/kudos/leaderboardpage/category-id/member-to-member_discussion/timera...
Solutions Leaderboard - Community Wide
https://community.upwork.com/t5/solutions/acceptedsolutionsleaderboardpage/timerange/one_month/page/...
Solutions Leaderboard - Specific Board - As before, you can change "freelancers" to any board in Community.
https://community.upwork.com/t5/solutions/acceptedsolutionsleaderboardpage/node-display-id/board%3Af...
