Love the list! If you want recommendations, I have these:

• Unwieldy Creatures by Addie Tsai (Frankenstein)
• Hungerstone by Kat Dunn (Carmilla) (I know the original Carmilla was also gay but this is a bit gayer lol)
• The Death I Gave Him by Em X Liu (Hamlet)
• Private Rites by Julia Armfield (King Lear)
• The Raven Tower (a sort of hamlet retelling with a bi trans man protagonist)
• As I Descended by Robin Talley (Macbeth)
• What Moves the Dead by T. Kingfisher (The Fall of the House of Usher) Less of a retelling of a single book and more a series, albeit very loosely: The Affair of the Mysterious Letter by Alexis Hall (Sherlock Holmes, with particular inspiration from A Scandal in Bohemia, as well as other non Sherlock classical literature such as Dracula) Needless to say some of these retellings are looser than others so I leave it to your judgement if they’re a good fit for your list!