I’m good with having four separate bank accounts and separate filing but wanted to get feedback and thoughts on this entity structure. 

We can “split hairs” on this topic, but let’s just accept that our different experiences have produced a somewhat differing view.  

Yes, as long as you're filing jointly, you can combine the time and activities both you and your wife spend managing the rentals to meet the material participation requirements.

The filing for the county is a COA  not HOA which is very confusing for owners and investors.  

When customers really got disappointed they approach Better Business Bureau some even file through attorney generals etc. 

If that is ignored, you could file suit and in the discovery process you could compel them to produce financial statements.

When you file your 2024 taxes, depending on how you file, this can help.Anything else?

@Daisy HawkinsLLCs in California are required to report either the member or manager name to the publicly-filed Secretary of State records anyway, so anonymity is very hard in the first place in CA, even if using an LLC. 

Not having to work in this example means having the 15 rentals producing enough cash flow to pay all their costs, including all 14 old mortgages and the 15th (new) mortgage that is refinanced each year.   

HUD wouldn't change that without someone filing the appropriate paperwork.