Is there a reason the list is missing?

I'm working on a new project now and I've hunting down all the possible songs and song titles for all eras. This list would help me a lot.

One of the struggles I'm facing is determining whether a Bon Jovi song was given someone else (eg Nothing) or it was written for someone. The line is quite blurry here. Sometime we have the demo but even then the demo could have been recorded as a guide for someone to know how to record the song.