If there are so many countless examples, why don't you name a single one of them. Or even better, anything that's not an anecdote.
(You named two, but you forgot to mention Lia is still very regularly beaten and Laurel placed last in her group at those Olympics, in a weight class that had most countries not even send a competitor.)
These people have higher than baseline testosterone in their system. Trans women usually have close to none. This is not comparing the same, or even similar situations.
>The single biggest genetic difference among humans is the presence of a Y chromosome.
That is actually incorrect. You can be born with a Y chromosome and zero functional testosterone[1]. There are a lot of moving parts in between having a Y chromosome and getting testosterone expression. The later of which is a much better discriminator.
And also, these deviations aren't rare. Though they are usually unknown, when they don't cause obvious developmental deviation (and thus labeled DSDs). They also are more common in some populations.
Indeed this seems like a refutation of the whole thesis that trans athletes are somehow cheating. Intersex conditions are natural (as in no surgery of hormone treatments are involved), yet they confer a competitive advantage - just like genes for bigger lungs or longer limbs confer an advantage to some athletes - so why should a trans person be treated as uniquely advantaged?
The claim isn't that trans athletes are cheating. The claim is they should not be allowed to participate in women's sports.
The intersex athletes support this claim because, although their condition is "natural" in your sense, they are in fact being banned from participation in women's sports. For example, the various individuals mentioned above are restricted from participating in distances from 400m to a mile, including in particular 800m! (Thus they have switched to other distances, but the bans are likely to extend there too.)
(You named two, but you forgot to mention Lia is still very regularly beaten and Laurel placed last in her group at those Olympics, in a weight class that had most countries not even send a competitor.)