Middle name for David

myschlove

Last name starts with an "L" and ends with "man"

diamondduck13

When people give clues on the LN I always pick one to use when trying out the FN options. In this case I chose Letterman. Love the FN David, assuming your last name isn't actually Letterman. I voted for MN Andrew, but I think several of your options work well.

Harveys11

Love these. I'd avoid David Benjamin since your LN also ends with an "n". I really like David Alexander. Love the classics!