Attraction is weird. It changes as I get to know people. I'll use college as an example.
Like on the first day of class you look around and you see like 2 dudes you think are hot, a couple of unfortunate looking people, and a couple of just average guys you won't remember the second you leave that class.
Then at the end of the semester, the three guys you thought were hot are HIDEOUS. Like I WOULD NOT DATE THEM EVER. Like unbelievably turned off by them because they have portrayed character traits that have altered my view of them 100% and I stare at them just trying to see what I saw originally.
Meanwhile, the guy with glasses and a beard that sits next to me each day (a guy who I literally did not notice the first day) has become the cutest guy in class. Over time, he has made funny jokes, and he's smart and kind. I can just look at him and think wow this guy is fucking sexy how did I not notice him he's clearly the hottest guy in this fucking class. Like I will be very physically attracted to that guy.
This is just a hypothetical but I'm trying to say that if you put me around a group of people I will RARELY be able to distinguish the sexy person right away. It takes time because your personality will totally fucking warp the way I see you physically. When I first met my husband I didn't even think he was cute AT ALL and now I could just stare at him all fucking day because I think he's truly the most gorgeous creature alive.