Is there a definitive name for my obsessive tendencies?

some of those are perfectly normal like being obsessed like with new hobbies ..... maybe autistic..there are many forms of autism and some include obsessions for people thing knowledge numbers and all kids of things.. i watched a show today lol that had two twin sisters that were autistic and they kept track of what color different movie stars clothes were every time they were on tv ..... for over 30 years ,... so your obsessions sound harmless and less wierd