I categorize these types of occurrences as “personal experiences”. They are not restricted to few fringe people, with questionable reputations or unstable minds, but are quite prevalent. Throughout class, history, education level, and location on the map those three experiences you mention have been a feature of mankind rather than an exception.
I don’t mind that one might discount personal experiences from being a scientific proof, but that you say “ridiculous” makes me think you value personal experience even less. A personal experience cannot be verified and tested, by virtue of it being a unique instance associated with an individual. However, personal experiences are usually the defining moments of a person’s life, and some of history’s turning points have been credited to an individual’s personal experience. To outright deny personal experience, for lack of proof, is to deny and ridicule a valuable aspect of our humanity.
For some, who hold to science as a god, finding in it validation and explanation of everything, all that is outside its bounds is laughable. Unfortunately that is a great part of what makes man, human. Atheists rail against the authority of God, as a being which restricts and puts limits to the will of man with Truths, dogmas and moral laws. Science strips man of value and personal experience. It’s really a choice about which god(s) we choose to be obedient to.