The above examples are all Adobe Standard. I had CCP profiles (shot on location) for 1 and 3, but no more. They did no better in getting the flower color right (but messed up other colors), so I got rid of them.
The version on the right is how it's supposed to look. It's mainly a "blue-component-removal" correction in the HSL panel, by pushing the blue slider towards magenta (which of course affects other blues in the image, so this is better done in PS where it can be applied locally).
It's all this blue that makes me suspect UV as the culprit. And I've talked to other experienced nature photographers who have exactly the same problem. Some recommend filters, but all agree that you really need a mental "map" of how those colors are supposed to look, so you can correct later.