I can't think of any MG for that age group at the moment, most of them max out at 13. What are you thinking about? I can think of older ones eg Skullduggery pleasant, Lockwood, but not recent.

I think any novel that doesn't have contentious content or isn't specifically dealing with teen issues can apply. Look at Robin Stevens or maybe MG Leonards', although I haven't read either. Generally, the Rick Riordan, Philip Reeves adventure stuff. Novels, but not issues-driven.