I'm an amateur science communicator, archivist, and artist, and I work in medical tech. (My company doesn't have a Wikipedia page.)
I live in the United States.
I tend to jump around wildly for categorization, wikilinks, and copyedits.
For more substantial edits, I am still fairly erratic about which pages I focus in on - but here is a general list of topics:
Chemistry
Environmental science and land stewardship (and most related topics)
Fungi
Indigenous history and culture - especially relating to the colonization of the Americas, and the culture and history of peoples from the Pacific Northwest and islands in/near Central and South America
LGBT history and queer theory
Mythology in general
Oregon (US state) history
Psychology
Spaceflight
Textile and fiber art, and materials used in it
I also have a few specific "project" pages that I am working on long-term.