I don't think that Cheryl and Cherie have anything to do with Cherry and so aren't "fruity" at all.
Cherry, on the other hand, is already well-established as a given name in the USA and was way before any of the others.
Berry turns up as a male name in the USA because in most American accents it's pronounced the same way as Barry, and so is seen by some parents as just an alternative spelling for Barry.
I've seen more than one example of both Peach and Peaches used as given names for girls, and there is a British author who calls herself Plum Sykes, though I believe that's a pen name and not the name her parents gave her. But I don't see "fruity" names becoming a big new fashion; just one of the hundreds of different ways parents are creating new names in the modern culture where giving children "unusual" names is more and more desired.