The in-game leaderboard has four tabs. Each tab shows the top 30 players for that metric. Reaching a high enough rank earns a corresponding title — see Titles.
Players ranked by the number of elements they were first to discover. Each discovery is permanent and stays attributed to the original discoverer regardless of subsequent Marketplace sales.
Players ranked by total elements in their saved set (discovered + received through the Marketplace combined). This is a longer-running board and changes more gradually.
Players ranked by total lifetime Gems (the same kind of total as the Transactions "Total Earnings" stat).
Players ranked by longest unbroken daily-quest streak.
Appearing on any of these boards automatically earns the matching title: Dedicated (Quest Streak), Treasurer (Gems), Pioneer (Discoveries), Alchemist (All-time). Reach #1 on any board and you earn the Champion title.
Related: Permissions · Server List