There is a cliché "girls and horses" netflix series, but i googled and there is no evidence of it being queer :/

btw, an ok and confirmed queer "girls and horses" movie is "Of Girls and Horses" / "Von Mädchen und Pferden" (yes, a German movie that is not terrible… I'm surprised too). I mean… don't expect tooo much, especially consent-wise, and it is a bit cringeworthy, but yeah I liked it.