Yeah, but none of that helps with me not liking them
I personally found as I got older (not implying that you're young, just that I changed over time) that many people I previously disliked were now just people I felt neutral about. More specifically, I thought they were well intentioned but flawed as all humans are, and their flaws just happen to be the ones that bug me but not others.
The people I actually dislike is now a much smaller group, and they almost all fall into three categories:
1. People who lack personal integrity
2. People who act smarter/more qualified than they are and hurt people as a result
3. People who consistently take things the wrong way. In the context of race and gender stuff, this is a hard line to draw, but in my experience the egregious cases of taking things the wrong way are rare and fairly obvious. I don't mind well intentioned people in the gray area.
All three categories are just frustrating or tiring to be friends with or to work with, and they drag everyone else down with them.