Malia
After the Riders then, but before the war. That makes sense, or as much as this place does.
This place is... confusing. Allison is here, alive. From right around her death, I guess. Isaac is from after that, but I haven't talked to him much. I didn't bother to ask when Argent is from, but I know Sheriff Stilinski is from around the same point as you.
Basically, I'm from about six months in your future. Also, Stilinski has been here for over four years.