Other people. Whether they're "celebritities", politicians, social media influencers, neighbours, work colleagues, sports stars, pop stars, even distant family. Just can't muster any interest nor enthusiasm at all. The only people I have any remote interest in are my immediate family/household.
I remember back in my teens and friends were buying pop magazines and got so excited reading about their favourite pop stars, their lives, where they went on holiday, what they were wearing, etc. I just didn't give a toss back then and I don't give a toss today.
Obviously, I liked/like listening to music, watching films/tv, watching some sports, and am pretty interested in politics, but I have no interest at all in the personalities involved, I'm only interested in them doing their job!