So many, but here's a few:

-Can't stand the sun blasting at me, or bright lights. Darkness is good. -Have a long sleep ritual and special pillow (an old shapeless blop that I could not sleep without). I will organize my bed, bed linen, pillow and then ear plugs and a bluetooth face mask all of which has to be just right or I can't settle. Using separate bed linens is my best relationship advice because my partner is pure chaos and I am princess and the pea. -I eat things in particular ways, have always reorganized my burgers for example. -Loud sounds or off key music is painful. -Can't wear clothes that don't feel symmetric, like sock lenght or how tight shoelaces are. Can't handle clothes twisting or pulling anywhere, this is why I sleep nude no matter how cold it is. -Hair can't be touching face. -Hot weather and me don't mix at all. -My stuff always has a designated spot. If you move it, I will notice and move it back. No matter how small a thing it is. -Don't talk to me the first two hours after waking up. -Will infodump about anything, to anyone. -My hyperfocuses tend to land me in magazines or careers, I go all in on them. -Dark mode on everything. I game with screen filters on. -Need to feel clean, but skin can't feel dry. I swim in lotion. -Hair has to on the other hand feel and look superclean at all times. -I know most song lyrics by heart and have the most intense earworms with entire playlists of songs in them that can go on for weeks at a time. I have no control over this and any association can bring on songs like writing this is doing. -I think all the time. I analyze things all the time. There is never silence in my head. This is why I listen to stories for sleep or I would never sleep. My brain just keeps having interesting debates and ponderings about all the things. -I love nights. I never sleep nights if I don't have to, I thrive alone in the dark with my thoughts and always have. -I can't survive mornings, I burn out very fast if I have to work mornings for a long time even if I go to sleep early. -My sense of smell and taste are extremely good, can smell if someone is on their period for example. Strong flavours can be a problem. Things that others like, like saffron, taste metallic to me if used in the "normal" amounts. -I am an intense foodie and love perfecting flavour in foods. -Music makes me very emotional. The emotions are so intense I have had to back off from performing certain songs when I still sang because I can't keep it together at all. -Can't handle puke stuff at all, not even in tv or movies. It will make me sick instantly. -Can't play FPS games without getting intense motion sickness. Also can't watch videos while exercising at home without getting nauseous unless the camera is still and not in first person view.

Oh lol I could just keep on going, but maybe this is plenty. Anyone who reads all this is a champ.