Chances are what you perceive as geranium in most perfumes is really actually Rhodinol or Geraniol, which are used in perfumery to enhance flowery aspects, especially rosy and fruity nuances.
As far as the common houseplant of geraniums, I don’t think that those species are used for distilling essential oils. But there are so many varieties of geraniums, some with rosy fragrances (Rose geranium), some with camphoraceous, some with minty, pine or citrus aspects that it is just too broad to say what specific perfumes geraniums may influence, because it could literally mean thousands. They often are part of floral bouquets though.
When a fragrance house characterizes its particular perfumes with commonly known scents that the public can identify with, it is not a testament to the real contents of the juice. They are simply ideograms of the different facets of the general scent, if you get what I mean.