The individual agents/teams within the brokerage are the ones that set out to establish a niche to work with investors.If you're looking for a broker primarily focused on working with investors, you may want to speak with commercial brokers and agents.

If I was the owner I would be asking why is it not published in the NY times, or other publications that have high net worth individuals.

It's best to let the individual investors make a mistake and then they can swoop in and exercise their right.

Mostly you're going to see that on high end expensive homes, where sellers only allow pre-qualified individuals to tout their homes.  

According to the brokerage and agent, these individuals either weren’t serious or claimed they didn’t realize the property was occupied, even though it was clearly stated in the listing.I’m not particularly concerned about the property’s condition or the eviction process, as I’ve already secured some level of cooperation and have basic access to the basement.

Some places like Illinois for example require individuals to be licensed with the state in order to wholesale more than 1 deal per year. 

Concealed Involvement of Barred Individual: Ron Fossum is barred by the SEC for a similar, $20-million-dollar financial fraud and his involvement in Norada Capital Management is concealed.4.

It feels like everyone and their grandma is on the Do Not Call list nowadays and my worry is the fines associated with accidently calling these individuals. 

I would assume that you'd just simply sell each individual lot to the developer at a set lot price such that your cost to purchase the raw land and improve it to buildable lots was worth the proposed profit per lot.  

If I were to go this route I would clearly identify each of these risks individually, understand how the Govt would potentially challenge each of them and then assess in your particular fact pattern how you would effectively rebut a challenge to each.