A conventional loan by definition is a loan that is not an insured government loan.

The podcast you mention is referencing (i) Freddie Mac Small Balance Loans ("SBL"), and (ii) Fannie Mae Small Loans, which are essentially government-backed CMBS loans. 

Some areas have conservation easements , you may cut a deal with the local government where if you put a restriction on the property to let it go natural they may pay you . 

Still, good news.But then something happened, government COVID intervention, where we printed $10 Trillion and injected that intravenously into the economy’s carotid artery.

Informative read about the high amount of ADU's being built in Los Angeles, the impacts they're having on the neighborhoods, and what local government is doing to preserve the "look and feel" of neighborhoods with the change in housing.

You can do your own research and see what the Government gives you for Tax-deferred and Tax-free Sales of multi-family properties.

Treasury bonds, which are issued by the United States federal government.

Again, I don't want to speak for them or start rumors, rather see if anyone has any direct credible experience they can share.  

Any institutions you can buy it with or do you have to go to the government website?

If they've been there 10 years, you have a good idea of how well they take care of the place as what you saw when you viewed it would reflect that.For state laws-google it and you will find a government website with the info.