The global leaderboard, on the Progress tab, ranks Tarc users and shows how you compare.
The leaderboard shows the top 50 ranked users, along with your own position if you're not in the top 50. Ranking reflects your XP.
Username, display name, avatar (with any equipped frame), and any equipped title or badge — the same information visible on a public profile.
The leaderboard is a server-side ranking across all Tarc users, so it depends on having a persistent, identifiable account record — Guest Mode has no such record, and guest progress never appears on it.
Once you have an account, you appear on the leaderboard automatically if your public profile toggle is on (the default). Turning that toggle off removes you from the leaderboard as well as from public profile visibility.
You can view it, but guest progress never appears on it — the leaderboard only ranks signed-in accounts.
The top 50 ranked users, plus your own position if you're outside the top 50.
XP.
Yes — turning off the public profile toggle in your profile settings removes you from both the leaderboard and public profile visibility.