Several duplicate threads, but always fun.
Although I had some concrete interests as a child, I no longer have any 'classic' AS interests, where a person memorizes all of the facts around a concrete obsession. My memory is terrible, although my long-term is about average with a normal IQ NT. Instead all of my interests are dedicated to the spatial part of my mind, in particular how to understand, analyze and model textures.
This manifests in several different ways. I love cooking (taste is processed as a texture in your mind) brewing beer and wine-making. I love growing things, gardens, mushrooms, trees and livestock. I love analytical modeling, econometrics, statistics, data mining and financial forecasting. I also love world-building: writing and role-playing.
Every one of these is a texture of cause and effect, reinforcement and mitigation. Bay Leaves add a mild earthy/evergreen tone and make umami taste more round - early season broccoli is harvested by frost-free + 6 leaving space for late-season, fast-growing melons or lettuces - classic vintage models are useful in survival cohorting with high substitution where cox-proportional models are best in discriminant systems with truncated time frames.... ETC.
The texture of non-linear cause and effect is my fascination.