Quality matters, not quantity. After all, there’s no need to work with ten alternatives of CAD, if that’s clearly the best option available right now, and the most widely used one. Of course you can prefer another program… But anyway, it makes no sense to talk in your interview about working with three or four products that have the same functionality.
On the top of that, if you mention many programs, recruiters can easily get a feeling that you are not persistent and aren’t exactly skilled with any of them. Therefor I would suggest you focusing on one or two programs, and the advantages you saw while working with them.
Practical test may surprise you
It is better to talk humbly about your skills. They can ask you to work with CAD or Photoshop right in the interview, as it is the best way to see if you can really do your job with the program. Practical exercises are becoming common in graphic design interviews, and you should always count with the possibility of such a test.
If you said you were skilled with Photoshop, but struggled to complete the tasks they assigned later in an interview, they would hire someone else. Without trust, there is never a job contract…
Therefor I suggest you not to overrate your skills. Simply say you can work with it, and still try to improve, mentioning a couple of things you’ve done lately with the program.