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Hello! I am writing a book here and I am trying to include as much diversity as I can. I need help making sure that I'm not being offensive or anything to anyone. I'll write more as I think of stuff, but here are the character profiles.
Rose:

Kind of based off of me, she loves to read, write, act, and draw. She is clever, creative, cautious, strong, and curious, but also stubborn, a perfectionist, and easily overwhelmed, distracted, and annoyed. She probably has ADHD/autism, and has anxiety. I don't know what gender she ends up liking, if I decide on girls it'll be Skye. If it's boys, I'll make up a new character (James might be a good name?), or she might be asexual. She is 5'4-5'6 as an adult.
Cassandra:

Cassandra loves art and history. She is Rose's cousin, Catherine's half sister, and is Japanese-British. She is creative, polite, passionate, and independent, but also unrealistic, distracted, and stubborn. She is a lesbian, and ends up dating Stacey. She is 5'7.
Skye:

Skye loves science and horror stories/movies. She is either Scottish, Irish, or Norwegian, I haven't decided yet. She is sarcastic, confident, intelligent, and fearless, but also blunt, impatient, and quick-tempered. She may be pansexual, if I decide Rose should be with a girl, and if not, asexual. (I'm thinking they should be together, even if that means Rose's sexuality doesn't match up to mine I guess. So yeah, the first option is better.) She is 5'6.
Chloe:

Chloe loves writing and romance. She is either part Native American, South Asian, or Brazilian (have to decide soo much when writing, right?) She is courageous, romantic, protective, and dramatic, but also sneaky, procrastinating, and careless. She is straight (one of 2 or 3 of the group lol) and one of the first to start dating. She is 5'6.
Stacey:

Stacey loves fashion and politics (and sleeping lol). She is clever, easygoing, understanding, and practical, but also indecisive, anxious, and obsessive. She has OCD and autism. She is a lesbian, and is dating Cassandra. She is 5'2
Catherine:

Catherine loves acting and dancing. She is Rose's cousin and Cassandra's half sister. She is imaginative, amicable, self confident, and daring, but also forgetful, jealous, and irrational. She wears glasses. Ok, this is one of the parts I had questions about. She is dating a gender fluid or nonbinary (haven't decided) person, but I was going to have her be straight? Can she still be or does she have to be pansexual or something? I don't want to get anything wrong. She is 5'4
Isabella:

Isabella loves animals and gardening. She is Australian. She is energetic, hard working, and patient, but also nervous, overthinking, and picky. She is a vegetarian, and has anxiety. She is also straight. She is 5'
Violet:

Violet loves sports and cooking. She is African-American. She is determined, ambitious, athletic, and resourceful, but also impulsive, stubborn, and nosy. She is left handed and has ADHD (particularly the hyperactive part lol). She is aro/ace. She is 5'10.
Is there anything else I should add? I have stuff like favorite books/animals/colrs too, but thats not as important. Are there any other cultures/sexualities/races etc. that i should include? At least one of the girls will have two same-sex parents, and I'll include some trans characters, possibly one of their parents too. I wanted to include a trans/nonbinary etc. character as one of the main ones, but I would have to change stuff around, so do you think it's okay if it's a secondary character? I really want to write a diverse, accurate book without forgetting or writing anything wrong. If the links don't work, tell me. Is there anything i should change?

I haven't really started writing it yet, but it's probably going to be a contemporary mystery book? All the characters start out around 13 years old, and get older as the series goes on, like Harry Potter. But yeah, I'm writing a short story that I'll probably publish on Wattpad or something whenever i finish, so I'll link it to here when I'm done, not sure when that'll be. It'll take place when they're in college, and they go on a road trip together and have lots of adventures (including nearly getting murdered by a bunch of geese lol). Thanks for your advice though!

And what does closed door mean? No s*x? I wasn't planning to have any, I don't like reading or writing smut.

Ok cool.