Inversionist

But first let us note that the theme of inversion, which is central in Runeberg's poem, is a typical Romantic feature. The Romantics were great inversionists. They inverted any number of dualistic antithetical opposites […]

Source: wiktionary

As Freud elaborates his idea of an Oedipus complex and adapts to it his experiences of homosexuality, the congenital claims of Havelock Ellis and the inversionists are largely replaced by a developmental model.

Source: wiktionary