So I was looking at the lore for both TF and Graves and noticed that the two lore seem to contradict each other. TF's says he volunteered and that Dr. Xavior Rath was the one in charge. Grave's lore states that TF had the procedure offered to him by Dr. Aregor Priggs. I don't know if i misread something or there is a mistake. Can anyone clarify?

Twisted Fate is.... almost 3 years older than Graves.
His lore has yet to be fixed/updated.

There is something similar with Nasus/Renekton

I just kinda read it a little differently. I figure Priggs was a colleague of Rath's and had heard about his project, then volunteered Fate for it. That's probably just me though, and likely should be fixed.