Stacy in the 'Stacy's Mom Story' is most likely the central character related to her mom. She could be a young girl with her own dreams and aspirations. Maybe she is an artist or a sporty person. Her actions and character would probably be intertwined with her mom's story. For example, if Stacy is into painting, her mom's support or lack of understanding for her passion could be part of the story.
Curtis Clark in the 'Curtis Clark Ghost Story' is likely the person who either experienced the ghostly events or is the one who first told the story. He could be an ordinary person who had an extraordinary encounter with the supernatural.
I'm not sure. Maybe it was inspired by real people or situations, but it might also be completely made up. It depends on the author's creativity and intent.
In certain comic continuities, Gwen Stacy is alive. However, her status has changed throughout different comic arcs and reboots. Sometimes she's been brought back through various means in the fictional comic world.
Gwen Stacy is not trans in the comics. The character has been presented in a conventional gender role throughout the comic series. There have been no storylines suggesting otherwise.
Gwen Stacy was an important figure in the Spider-Man comic universe. She was smart, kind, and had a complex relationship with Peter Parker. Her death had a huge impact on the story.