Flight is so useful, it evolved 4 times independently. With very similar solutions. https://en.wikipedia.org/wiki/Flying_and_gliding_animals

And crustaceans keep evolving into crabs. https://www.popsci.com/story/animals/why-everything-becomes-...

And who even knows how many different times high level intelligence has evolved. I think octopi, birds, and mammals are all good examples of separate intelligence tracks with similar results.