Having devoted a chunk of unexpected downtime to scrolling through every one of the 4975 (at the time) instances of lesbian characters documented in the LezWatchTV database (https://lezwatchtv.com), and using my own certainly imperfect, VERY OVERBROAD categorization process, I found 525 that seemed even remotely gender-nonconforming. That would be 10.6% of lesbian characters, already a fraction of characters in the media universe. Not sure what percent of those GNC characters land in the butch category. So all our perceptions seem pretty spot on…butch media representation is a tiny slice of a tiny slice of a tiny slice of the media pie.
Would love to have other folks’ take, should any of y’all have the time and inclination.