What are the mortgage lending requirements on investment property jumbo loans. Can you please explain the lending guidelines on traditional and non-QM jumbo loans, the borrowers credit and income requirements, the down payment requirements and closing costs, the maximum debt-to-income ratio, the mortgage rates on non-QM jumbo loans, and the various different types of traditional and non-QM jumbo loans? If you can explain the mortgage process on traditional and non-QM jumbo loans on investment properties, it will be greatly appreciated?