"How I Built This" by NPR features interviews with successful entrepreneurs discussing the stories behind their companies.

Make sure you qualify them during the interview process.  

This includes internet research, books, interviewing long time investors, fund managers, brokers.  

I watched your videos of interviews with investors.

@Preetinder Singh Here's a list I used to interview brokers for our upcoming relocation to Maine. 

It doesn't have to be perfectly defined - for example you can have more than one market - but once you have a general criteria you can gather a list of Sponsors, eliminate those that don't fit your criteria, and then begin to interview them / some of their investors to make your final decision.

TBH - property managers are going to vary, and you are going to want to likely interview them in person. 

Try interviewing at least three managers.1.

Interview and work with an investor-focused real estate agent familiar with your strategy.

I'll start interviewing PM co's and consider that as next step.