In honor of Pride, I'm going to list a few Hellenic deities to think of more actively during this time
Aphrodite: Historically known to be intersex and trans, especially under the name Aphroditos. Not to mention as a goddess of love, that means all kinds of love and expressions of it. Everyone in the LGBT+ umbrella can turn to her without worry.
Apollon: He is known for epithets like the Unshorn, and for literally wearing feminine clothing for the time.
Artemis: Known for embracing masculinity and more masculine traits like her interests, mannerisms, and appearance (attire). Also known to be aro/ace spec.
Athene: Most know her to lean more toward masculinity, but she's more an equal mix of both masculine and feminine (nonbinary by human terms). Also known to be aro/ace spec and wlw as well.
Dionysos: Like Apollon, is known for wearing feminine clothing for the time and occasionally a feminine appearance to match. Embracing the unconventional and what lies outside of society's standards and mentalities is his thing, and it shows with epithets like Androgynos.
Hekate: A goddess of the liminal (everything in between), boundaries, and transitions, of paths and crossroads (which are more than physical ones).
Hera: As a goddess of women, that includes every kind of woman no matter what, there is no room to try and exclude anyone from that. She's also a goddess of marriage and one to lean on for rights on that matter.
Hermes: A god of the liminal, the god of transitions, boundaries, paths, and roads, and a god of romantic unions, the god of fire - the literal and figurative sparks that ensue as a god of friction, a weigher of love like Aphrodite. Before the late Classical and Hellenistic periods was also known to be aro/ace spec as outside of cultic unions, a majority of his immortal (and deity) children are goddesses as well, and he has two nonbinary (one intersex) children, Palaistra and Hermaphroditos, and occasionally the father of Eros either by Aphrodite or Artemis (and no this is real, you're just not ready for this conversation on this information).
Leto: In worship, she has the cult epithet Phystiê (the Grafter) that relates to a myth of her helping Leukippe transition at the wishes of his mother to avoid death. With the grafter epithet, she has a festival in her honor, Ekdysia (Stripping (Festival)). One of her sacred animals is the Ichneumon (Egyptian Mongoose), which was known to be both male and female in an individual member of the species.
Palaistra: The goddess of wrestling and daughter of Hermes is nonbinary, being both genders at once and neither at the same time
The Erotes: It kind of goes without saying that they should be here for a month of love, identity, and acceptance.
The Kharites: As goddesses of joy, merriment, and festivity/celebration, it feels as essential to have them here as the Erotes are. During Pride, they will lift your spirits and cause you to cheer.
