I don't have any that represent flags, but I definitely have dragons that are LGBTQ+ in the lore I have for them in my head!
Nyvra is trans. She and her mate are considering finding a surrogate, but they aren't sure if they have the time to raise hatchlings with their respective crafts taking up most of their time and energy.
Tulii is gay, Brynn is bi, and they are a totally cute couple. They adopted and raised one of my clan Banescales after finding her egg and smuggling her out of the Southern Icefield.
Cyrso is nonbinary, and they prefer not to try label themselves or their preferences. They are what they are, and they are not very picky as far as gender identity in a partner is concerned. They are mated to Nypha, who is cisgendered but pansexual.
Kiatra and Yssora are lesbians. They are my newest, so I don't have as much of their personalities or background figured out yet.
Rykarrys is asexual but totally on love with Zynno, who is bi. They are also a newer couple in my lair, so I don't have as much to write down yet for them.
Yliohn is bi, but tends to prefer male partners and is very picky. He has only been in love once. With Kethys, one of Ydrios's male heads who he met before he became part of an Emperor. Kethys is pansexual and doesn't really believe in monogamy. Love is what it is, sometimes it doesn't last and sometimes it isn't meant to be, but that's just life. He seems to fall in love frequently, which kind of annoys Shotho and amuses Ishara, but his feelings for Yliohn are on a different level.
Anyway, I seem to have gained more LGBTQ+ dragons since the last time I did one of these posts, hopefully it didn't end up too long! I tried not to write too much.