So just do bank statement loan if your monthly 'revenue' can support it. 

I won't be investing in the riskiest/most supportable asset subclasses such as hotels, and tilt my portfolio the ones that have historically been more stable such as multifamily and single-family housing.

If your priority is cash flow, then you need to look at markets that support that.

That being said, if I were the tenant, I'd say they were emotional support and then NOTHING can be done.

As a part of the partnership with the state of Virginia, which included $750 million of Virginia taxpayer money for infrastructure improvements to support the Amazon HQ2, Virginia is offering Amazon $550 million in grants for hitting that hiring goals, and an additional $200 million for hiring 12,850 more employees from 2030-2034.

This is you and you only; no support staff. 

If so, do you have any paperwork that supports the vesting to be able to show a potential lender? 

If these folks owned their own home prior, I would probably take that as them having better credit at that time even without a credit report to support it. 

The ways around that are to build a business around supporting their voucher and inspection program and spending no small amount of effort ensuring they are smoothly servicing your rentals. 

Best of luck with selecting your market—there's a wealth of knowledge and supportive investors here to help guide you along the way.