Like an anonymous submission.  

Also anonymity.  

An LLC could provide some anonymity, but I'm sure it'll become obvious you are the owner.  

It may or may not work for them.You might tell them something in terms of your own understanding, but their understanding may be quite different.There's a reason why you can walk past billionaires on the sidewalk all day long: they choose to remain anonymous.

If you're doing this for anonymity purposes, maybe a revocable trust makes sense - minimum transfer tax in NH of $40 and no-one can look up the beneficiaries of the trust to know who is behind it, which makes it more challenging for someone looking to sue you/take your assets.

Anonymity?  

To date, I’ve held all properties in my name and used a separate personal bank account for funds, but am now concerned more about maintaining anonymity, protecting assets, and overall structuring the business properly in order to scale the business.

Welcome to the meeting of Landlords Anonymous....

I've been posting ads on Craigslist 3x per day and have been getting some people emailing me back using the CL anonymous email they provide.

You cannot be anonymous in business.