Subversive gay writers
I'm not quite sure what you mean by subversive, but Andre Gide (Nobel Prize 1946) certainly was in his day.
One writer of whom it would be criminal to exclude is Jean Genet; but he, like Gide, is far too complex to elaborate on here.
During the 1950s, a remarkable writer exploded onto the literary scene. He was highly acclaimed for his scathing witticisms and high class camp. You may want to give Hemlock and After or Anglo-Saxon Attitudes a try. The author: Sir Angus Wilson.
Two books of more recent vintage are Sweet Tooth by Yves Navarre and The Beauty of Men by Andrew Holleran.
Of course, we should bear in mind that subversion may be aimed at the dominant culture or at the ubiquitous attitudes of gay men.