Just finished my first home and our 8 unit project just started production in the factory this week. 

It ain't that hard and is a far better product as far as long term durability.

If I were in your shoes (which I was recently, and will be again when I move to the next property), I would call up 10 different lenders including small banks, credit unions, etc. and tell them your situation, what you are trying to do, and how they might be able to provide a product to support you. 

Are there any asset backed loan products that lend in second position or any other forms of financing able to be collateralized by equity you can think of? 

I have not invested with them but if I was interested in that type of product I would setup a call to learn more about them

This is the sale price of my product and if you don't agree, but from someone else.I charge an assh*le tax.

Flexibility in Loan Terms: Josh offered a unique hybrid product that let my friend lock in a portion at a fixed rate while leaving the rest variable.

The majority of our properties already have DSCR loans on them, are tenant occupied, have been owned for less than a year/have sizable capital gains, are in a high appreciation market, may take a while to sell at market price on the MLS.Are there any loan products, even ones with balloon payments, that would let us access some of our equity in our properties through refinance or a 2nd position loan.

A few weeks ago I had a call with @Evan Darcy and he told me about his product ProperTally. 

They sell a 4 unit for close to 1 million dollars close to Jacksonville. they want 250k or 300k down. there's no upside. you can google the properties on biggerpockets and there isn't a lot of satisfaction. it's a slow return and get rich slow strategy. our focus is always as a builder to add maximum value, lower cost as low as possible, build and rent and build and sell the same product and raise prices to help investors out. we have a large market share and large purchasing power in our market in columbus ohio. the one strategy I never liked about turnkey new build brokerage companies like them and build2rent or others is they don't really build close to urban centers and most are single family homes. the numbers don't work on single family homes. if single family was the way to go more companies would be doing it. but by far the most common type of new construction built is three story walk up apartments.