I feel much more comfortable in dark rooms, with dark mode screens and quiet.
I am ADHD and ASD though, and it's ASD that leads to sensory overload conditions that make the dark, quite rooms help me a ton.
My pediatrician has told me that boys with ASD have a 90% chance of having ADHD, and its fairly common for girls as well, though not near 90%.
I suppose, since ASD diagnosis is difficult in more subtle cases and it costs a fair amount of time and money that there are a ton of folks diagnosed with ADHD that are also ASD and don't realize it.