There is a list, but there is no list.

Is either claim falsifiable?

Believers claim a blackmail list or compendium of damning documents has been shielded from public disclosure by an insidious “Deep State”. The press has long reported there is no credible sign of that & Trump played up conspiracy theories to win the following of useful idiots who subscribe to them.

What kind of evidence would a believer accept if the truth isn’t exactly as they believe?