Dcupdater generally does not any DC programs that do not have a *.dcupdater file in its Program Files folder. When you have Dcupdater install the program it places one in there for you. Otherwise it is up to the program's developer to have that file in their program setup. If you are using older versions of DC programs they will definitely not have the required *.dcupdater file included. A lot of the newer ones are also missing that file.
I just rebuilt my machine and installed all my DC programs - all latest versions. But DCupdater did not see most of them. I just went to the second tab on Dcupdater and had it download and install each program it said I did not have - they install right over the one that is already installed. After that the Updater sees all of them.