I had teaching jobs--full-time, part-time, all non-tenure-track.
I've now been staff in higher ed for about five years.
Your advisors do not know about non-academic jobs, because they don't have them. It wouldn't be right for them to talk about things they don't know about. It's up to you to find someone on the faculty who's worked outside higher ed.
It's not that faculty try to present themselves as experts on subjects about which they know little--such as getting a non-teaching job--it's just that they tacitly assume that the only meaningful conversation is about tenure-track jobs.
There are so many great jobs for smart people outside higher ed that you wouldn't believe it. You need to know how to describe your skills and strengths in terms besides writing scholarly prose.
The best advice is that given in What Color Is Your Parachute? Namely, you do not know what kinds of jobs there are until you ask lots of people what they do, what they like and don't like about their jobs, and who else to talk to.
I was lucky, because when I was getting my Ph.D. there were people who wrote for Cosmo, documentary filmmakers, archivists, and all sorts of people in and around my grad program. So I got a sense of other job tracks very quickly--even though it took me years to retool myself.
It can be done. You can do it. Keep an open mind. Ask questions. Talk to people. Be a curious person. Get out into the world. Interact with people. Don't just do a lit review.