Found this in the comment section of @strange-aeons's video about queer symbols:
via YouTube
The non-binary lesbian in question is Sam Hultin and the project is known as the Eva-Lisa's Monument. Eva-Lisa's works and life stories are archived at the Queerrörelsens arkiv och bibliotek in Gothenburg, Sweden.
You should take the time to take a read the wiki because it's wild where the transphobia she faced came from:
Here is one of the photos the commentator from the screenshots is referencing:
via Wikimedia Commons, taken by Sam Hultin in 2017. There is a 35-minutes documentary "Dear Eva-Lisa" commissioned by Mint in 2020, and English subtitles are available. The video is unlisted, so you will not be able to find it in search.
If you want a copy of Eva-Lisa's biography, "Eva-Lisas monument" (2025) is available from the Swedish publisher Brombergs.