Well DMing right now so no character. The character in my head however, well he (she in disguise) is trying to avoid her unknown fate. I guess it could count as "Survival", in that she is afraid of what is to come/the changes it will bring. Which follows lots of the themes of Survival.
I would say for past characters Survival and Uncovering are the two most common (sometimes intersecting) motivations. Survival usually means being on the run, and Uncovering is either why they are threatened, or find something out about their past.
There was one character where Money brought up Survival/Uncovery. Since she was greedy and stole a skull of Lothar's. Now she is on the run, and also trying to figure out what is so special about this skull.