Good for you. All of my degrees are non-traditional to some extent. The hardest was the law degree received at 65. Much good luck with your program and look hard for the master’s that would do you most good or be the most fun, perhaps both. My master’s was in computer systems management, kind of a soft-compsci/mba hybrid.
My area of fun/expertise is cyber security. I have recently found out that Colorado Technical University has a doctor’s program in cyber security. So my masters would be aligned with that. The idea being that I could use my Doctor’s degree to teach in a local college / university after I retire from the industry.