I have over 1,100 physical books (way more ebooks, over 4,400, and 300 something audiobooks but those take up no more space than my tablet lol). I have them all logged onto multiple Goodreads shelves, started doing it when I became an avid reader in 2015.

And, mine are mix of genres. Horror might be the biggest but it's not like, a giant compared to other genres. I love a little bit of everything at least. I got horror, nonfiction (nature, animals, autobiographies, memoirs, biographies, social justice related things, disability justice, queer studies, anti-racism, history, paranormal, religion, psychology, Science, and other random topics here and there), classics, manga, comics, graphic novels, science fiction, fantasy, historical fiction, thrillers, contemporary, literary, romance ...

Yes I did just look at my bookshelves lol.

And each "area" looks ... fairly equal. Ish. An interesting mix at least. Horror and nonfiction (all subgenres combined) are definitely the largest.