What is a rich list?
The amount of NLG the top 20 owners have?
it shows how the coins are distributed; how many people have wallets with a balance greater than 0, and how many wallets there are with large amounts of coins.
the more wallets with smaller amounts, the better, as it indicates a widespread adoption of the coin, and manipulative traders can do less harm.
an actual example of another coin is shown here:
http://explorer.energycoin.pw/richlist/ Thats the theory, a richlist only shows the wallets of people that are stacking in one address. Big investors spread their coins over several small wallets or move them around so it becomes very hard to pinpoint who owns what. If a richlist shows you 90% of the coins in 10 wallets you know there are 10 big holders. If the richlist shows you 90% in 1000 .1 to 1 mil wallets you know nothing about the distribution. It´s a nice toy but nothing more than that.