Quality matters, not quantity. There’s no point in working with ten alternatives to CAD, if CAD’s clearly the best option available right now, and the most widely used program.
Of course you can prefer another software, but it would make little sense to talk about three or four products that have the same functionality.
Practical test may surprise you
It is better to stay humble. They can ask you to work with CAD or Photoshop right in the interview–that’s the best test of your design skills.
Practical exercises are becoming common in graphic design interviews, and you should always count with the possibility of encountering the practical test.
If you said you were skilled with Photoshop, but struggled to complete the tasks in the test, they would not hire you. They won’t sign a job contract with you unless they trust you.
Try to not overrate your skills. Simply say you can work with the software, and strive to improve your skills with every new design work.