Dead Island 2 Skill Cards Question

I was searching up good builds for Jacob but a lot of the slayer cards are in survivor slots. For example, one site showed Group Therapy and Hack and Dash in survivor slots despite being Slayer Cards. Is this a weird thing with sites or have I simply not reached that part?

https://preview.redd.it/d6f1t08cqr3e1.png?width=791&format=png&auto=webp&s=5250c22cd027698eeffad6ad649a231720c6c647