I guess it really depends on the game, but 99% of the games I've played since '00 use WASD and it's what stuck with me. The most notable exceptions are some of the much, much older FPS that use the arrow keys, like Rainbow 6, and Mechwarrior games.

Hadn't really considered anything like YGHJ before, it does make sense, but I'm an old dog that doesn't learn new tricks well. Have a standard layout that I consistently use with WASD and it works for me.

I am curious about something here. What does everyone use for "jump"? Mine's always mouse2 instead of spacebar.