Abraham Lincoln & John F. Kennedy Coincidences & Conspiracy Theory - Revisited

Is it a coincidence, or is there some truth to an age old urban legend regarding 2 iconic US presidents, Abraham Lincoln, and John F Kennedy. The theory allegedly first appeared in 1964, where popular news outlets at the time pushed a story that featured a list of incredible coincidences between the life and death of both Lincoln and Kennedy.
The legendary list has stood the test of time, where even today, people who;ve newly discovered the list have the same reaction as people did decades ago. So what exactly are some of these startling coincidences that have so many people still freaking out about this.