Hi, you can not buy what it yours. Meaning that you can not buy your own home.

Realtives: some lenders have the next policy:
Hereby affirm that this is an “Arm’s Length Transaction”,
No party to this contract is a family member, business associate, or share a business interest with the mortgagor. Further, there are no hidden terms or special understandings between the seller or buyer or their agents or mortgagor.
Some other do not care.

If a relative buys the property "for you" it is understood that your relative might never move in and you will be living at the roperty, so sonner or later, the same thing could happen. This is how the banks think no how customers / people think.

Also, it is not the same if the mortgage is the "original" mortgage than a refinance mortgage (with cash out).

You are correct. Companies have their policies.