Why would a definitive list of infallible papal teachings be required to clear up the misconception that infallibility, which protects only teachings (and only some of those) is the same thing as impeccability (sinlessness, which would include setting a perfect example in one's personal behavior, etc.)?
Understanding that one's teaching and one's personal behavior aren't the same thing is not rocket science. Our Lord mentions the concept in Scripture in relation to the Pharisees. I'm sure you're familiar with the passage.
Vatican I, in the decree Pastor Aeternus, set forth 4 conditions for a Papal statement to be infallible:
Is it possible for a Pope to infallibly make a pronouncement to inform the faithful which statements of his predecessors meet all 4 conditions you outlined?