Ask HN: Best place to find non-technical co-founder?

I've always had the entrepreneurial bug (selling websites on craigslist when I was 13), and feel I'm now in a good place financially, skillset wise (my last role was a tech-lead / cto with management experience, but many years as very fast generalist developer), and life to go in on a business idea.

My financial goals are to bootstrap something to 10's of millions and become financially independent.

It's my belief that the best / easiest way to accomplish this is to work with someone who has really deep industry experience and connections in a non-traditionally-technical field (construction, supply chains, healthcare, etc), and solve a niche problem that only someone with years of industry experience could identify.

My assumption, though, is that people with that sort of background do not traditionally hang out on reddit or HN -- does anyone have any experience or suggestions on where to find them?

I did check out YC's Co-Founder Match Maker, but so far most of the profiles have been either successful founders who are looking to go the fundraising route, or younger marketers / MBA's who don't necessarily have deep industry experience.

Thanks in advance!