Highest Level = The 10 players with the highest experience/stat-level
Vigilantes = The 10 players who have the highest good rep. (Over 5000 is Angelic)
Murderers = The 10 players who have the highest evil rep. (Over 5000 is Devil Incarnate)
Thieves = The 10 players who steal / pp the most.
Bandits = The 10 players who commit the most crimes. (pp'ing, but also stuff like PK'ing etc.)
Corpses = The 10 players who have died the most (I think this refers just to being player killed)
Merchants = The 10 players who have the most gold (on that char)
Hope that is useful, have a nice day! ^_^
PS. High on corpses usually just means you let other people raise their rep on you a lot. (rep cheating)
PPS. The value for the merchant ladder is in thousands of gold pieces. So someone who has 100 points on the merchant ladder has 100k gold on that char.
PPPS. Might as well include this on my Faldon info site...
"We must face the fact that the preservation of individual freedom is incompatible with a full satisfaction of our views of distributive justice."