This survey won't give a good picture of the industry besides how much money respondents make (not very useful for recruiters or statistician). Some better questions are: 1. how content are you with your current salary. 2. Does management shows that diversity is important through its actions. 3. Average hours worked per week 4. Is your company respectful and empathetic 5. Data on what city designers live in is important because of cost-of-living. Then you can create a user model and answer useful questions for example: The average transgender Designers feels this way about their company and are compensated this much or white males usually work in large cities and have little time outside of work, etc.

Out of curiosity, how did you come up with that list of job titles? I realize there's a ton of different roles in the industry, but this list seems fairly arbitrary. Example: I know a lot of folks—myself included—that are UX/UI generalists and don't really fit into any of the roles you've listed.