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If you are a member of PenFed and have had loans with them in the past there is a good chance you will not need to provide POI. I had two personal loans with PenFed, the first required two paystubs (I was a brand new member); the second was instantly approved without needing any POI. Its been my experience with PenFed that once they trust you, they trust you.
Do you ever get pre-approvals from PenFed? The credit card might be enough to help you get the PLOC without POI. I believe a lot of banks do have an internal score. At the bank I worked for years ago they called it a behaviour score and it would often be used to approve credit line increases and charges when their FICO score would have normally cut them off.
Can't help you with WF and US Bank..hopefully others can.
If you have Amex they send out pre approvals for personal loans sometimes. I just recently decided to take advantage of one they offered me. I I took no hard pull, no POI and money was funded within 24 hours. Was the easiest thing I have ever done and my interest rate was exactly what they told me in the pre approval.