If several paintings are analyzed and the chemical fingerprint of the paint is identical, it does not mean they evolved from a common ancestor. It merely means the painter used the same paint to paint multiple pictures.
True - although this also shows how an evolutionist faces many more obstacles in proving his side of the argument than vice versa (because divine fiat can explain anything.)
If the reverse were true, and it was the case that humans were built from entirely different building blocks from apes, then it would have been very strong evidence we
didn't have a common ancestor. (It's easier to prove the negative than the positive.)
As far as I can think, the evidence we have so far remains consistent with the evolutionary account. The problem is not that anything flatly contradicts evolution, but that the theory remains incomplete in some vital aspects, especially relating to the mechanism (I am indebted to you for demonstrating that to me). So it cannot be said to be 'proven' unless and until that method is demonstrated.
For me, there is convincing evidence in some of the bits that don't work that well. You could call it circumstantial evidence. Not enough to convict, but enough to build a strong case.
For instance, the development of the human embryo and birth is an amazing thing that many people find 'miraculous'. It's also, frankly, rather badly designed with far too many unnecessary possibilities for error.
The unique style of human birth (headfirst with a twist in the birth canal) is good evidence of evolution. It's just the kind of modification and adaption from a pre-existing method (a method that became inadequate for the larger size of human brains) that would you expect to see with evolution. It certainly doesn't look like the kind of method you would come up with if you were starting from a clean sheet.
Of course, it can always be said (about this as much as any other piece of evidence) that God can do as He wishes. He can construct a kind of Heath Robinson birth process if that's what He wants to do.