You got something interesting to say, say it. I've chased too many of these links to find nothing much there.
You asked for information and I provided it. As Barbie says, "science is hard."
You are asking for evidence of something that seldom, if ever happens, and which isn't predicted by evolution -- the sudden emergence of a major new variety by one mutation.
Real populations of real organisms carry many variations, all of which are successful. Variations are not easily classified as good or bad. Individual differences help insure that at least part of a population will survive changes in climate, food supply or competition.
When the fossil record show the apparent instantaneous emergence of a new species, that "instant" is something like a million years, give or take an order of magnitude. For most populations, that represents a hundred thousand generations, or more.
If you look at the record of climate over the last hundred thousand years you will see evidence of multiple large scale changes -- evidence of the need for populations to adapt the heat, cold, drought, and the changing nature of the competition.