Now they want to put the properties into RE Gain Fund, LLC UpREIT (which appears to have been established in 2023). 

You have to understand that without specifics you appear defensive rather than credible (what does "pass all of the checks and have proper income" mean?).

Starting out as a wholesaler appeared to be the best place to start in Real Estate for me.

It also keeps to a nationalistic conservative agenda, and without capitalism, it is just cuts to programs, and no investment into other areas. 

What would be considered the easiest program for small hard money lenders to use to track loans and history and sending out 1098 's?

I will not name every program out there because this would be a very large reply post.

I may consider more passive investments , but that appears hard to come by.

I know of one particular loan program in Columbus (I'd need to see if they service Dayton) that offers 0% down for owner-occupants.

Multiple properties listed on the website portfolio appeared to be ones they would possibly not have initiated the LOI/PSA/sale as the properties are known to be bought/run/sold by other entities/syndicators.

If you don’t have a large down payment saved up, don’t worry—there are plenty of options available . . .”A trusted lender will go over the various loan types with you, any down payment requirements on those, and down payment assistance programs you may qualify for.