As I run with OAK, I also have a tough time finding a playbook that has enough ways to feature Marcel Reece, who is a matchup nightmare at the FB position.
I noticed that BUF has some good plays for the FB, as does BAL.
Another thing to consider is teams that run lots of single back sets, as your FB, if he's got really unique skills, can be the lone back in that set to get some good plays.
Personally, the ones I look for include angle and wheel routes out of the backfield, as well as the occasional FB screen. I know BUF has that play.