@Scott Shumardi can't answer your question, but here is my recommendation.  1. start going to meetups and find out which HMLs the successful investors work with. 

Considering some SFR properties in Cahokia / Cahokia Heights, Illinois and looking for some recommendations on inpsectors in this area that do a good job looking at multiple properties

• Are there specific networking events or forums within the BiggerPockets community that you recommend?

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

I recommend finding local meetups to attend. https://www.biggerpockets.com/forums/521I have found all of my best connections at local meetups.

Also if there is any attorney in this area you highly recommend, please let me know 

Are there any insurance policies or providers you recommend for this unique use case?

Keep that in mind:)Regarding partnering, have tried it several times and most times it ends with a split.So, if you go forward with partnership, recommend making sure you both agree in writing, on how a split would work.Otherwise, you an both share everything you leanr and help each other out monetarily as needed.

I am currently looking for a new PM and wondering if that's an area you are interested in expanding to, or if you know of any MTR PMs that operate in that area that you would recommend?

Hey Gi'angelo, I recommend checking out your local REIA (Real Estate Investors Association).