Alex, fife, Ransom, Splodie and me were the only ones that made it to the top, I think.
Razzor had silicone rep implanted so it does not count.
For a long time in the very early days Sir T (remember him?) legit had the most rep and I had second most. I never said so but I was pretty pissed about it. Then people just stopped using the rep system for a few months before I started repping people and got my second or third pip. Sir T was inactive by that time so I had no real competition. Since rep amounts were dependent on the user's rep they just increased exponentially from there.
Aside from occasionally working rep with Torshin I never deliberately went out and repped everyone I could, reps from me were generally pretty rare. In return me getting rep was relatively rare too, especially if you considered the amount of rep I got compared to the amount of posts I made. The first nuking (as opposed to resetting after Super AIDS) was because the people who had been repping for nothing were close to catching me. Wasn't going to let that happen! By that point it was all meaningless and broken so why not destroy the whole thing? A single plus or minus rep from one of the greats could almost get someone a yellow star or drop them down to multiple red blocks (neg rep being much less potent than pos rep.) I feel bad for people who thought that the nutty "conspiracy" comments I left with the negs were me actually being crazy. If I was really mad about something I stayed dead silent on the issue, fuming in private.