I installed the CC suite on a clean system. I am not seeing any installed application showing in Extension Manager.
I went as far as un-installing all of CC, then reinstalling just Extension Manger and InDesign. (With Reboots in between).
Still the only application that shows in Extension Manager is "Others".
If you have installed CC 2015 apps, they will not show in ExMan as it is no longer supported. Please confirm?