I take your point, but I wonder how many of these examples would reveal evidence ancient divergence if further genetic testing were done.

In any case, what's the average time line of the common ancestor between any two of these examples? I'm guessing on the order of hundreds of millions of years?

When you draw the timeline back farther to the origin of life itself (3.5 billion years) the corresponding likelihood that evolution takes produces something similar to the present goes down.

Although if origin of life on earth is through seeding, perhaps the OP could be more likely