If you go to production library websites (APM/DeWolfe etc.) and tap in the style of music you are looking for, it will typically come up with loads of titles that will be of that ilk.
A lot of companies are in the process of digitally transferring their back catalogue too, so always good to check them from time to time.
KPM have just done a merger with extreme, and sadly they have yet to transfer the back catalogue that KPM have (Conroy FDH etc) you can still utilise the KPM (NOT APM) website still though to browse and listen (for now at least)
Although this is your first venture into library music, i think it is suffice to say that you may wish to venture; if you have not done so already, in film score music.