My definition of a natural born lucid dreamer is just someone who gets lucid dreams without really putting much effort into making them happening. I am wondering if these natural lucid dreamers have anything in common?

Such as:
-personality (introvert/extrovert) (or personality tests such as Myers-Briggs)
-genetic markers
-positive or negative RH factor (blood types)
-sensitivity to the paranormal
-heightened senses

It might be interesting if there is a connection, if it turns out there is no connection that is fine as well. I suppose there could be more than the ones I've listed so if you think of another, then list it.