Critias.
Now go blush; you deserve it.
My suggestion is, to an extent, start with this:
The Board's Most-Read Fiction Threads. (That's just this thread, sorted by most views.) Many/most of those in the top dozen are stellar, though a few IMO stink; I will note that Rook and Angels (Critias) are good, as is the collective-fiction (aka 'we ran this on Shadowland Six back in the day') 'There's Nothing Free In This World', co-written by Critias, Crimsondude, and about four or so others. (Not me, alas.)
Of the newer ones, I will suggest Midwestern Shadows, by SlowDeck.