I am not yet diagnosed but these are the more predominant interests I've spent months to years on for a certain time frame of my life.
As a kid: Biology, Astronomy, Reading, Psychology, Drawing, collecting hot wheels cars
As a teen: Green Day and Punk Rock, Guitar, collecting Harmonicas, Biology, the Japanese language, Anime/Manga, Drawing, Trumpet, Psychology, Documentaries
Currently: Japanese language and culture, To Aru Kagaku no Railgun, collecting Japanese-language Manga, Andes Air Crash of 1972, Linguistics, Drawing, Documentaries
I guess the Japanese-related things, drawing, documentaries, and playing guitar are my long-term interests. I've also always had a strong interest in serial killers as well, particularly the more morbid types like Ed Gein, John Wayne Gacy, and Jeffrey Dahmer. In addition to that, I have recently gotten back to buying and collecting harmonicas. Also, this past week I have been watching anything related to "The Room". I've watched it at least 5 times since Monday and I've seen all of the notable video reviews of it done online. I think I didn't get the clue though until my friends asked me yesterday if I was still going on about that when I kept using random quotes from it