People often want to put the blame on simple misogyny or racism, and I can't say there's nothing to that. However, these people are apples and oranges. The women on the list are all perceived to have some moral failing. They continue to thrust themselves into the spotlight and insist we love and consume them in spite of being unlikeable.
Meghan is perceived as a tone deaf try-hard who is simply not very good at anything she's attempted. In spite of this, she continues to beat against the window like a sad moth for our attention. The media (and Meghan's own social media) keep calling attention to her gaffes and mediocrity, fanning the flames.
Diddy, serial rapist and assaulter, has two major advantages in a ranking like this. He was arrested and convicted and is now out of sight, except for resurfacing occasionally to let us know what a soft little princeling he is behind bars. (No one is surprised about this.) Secondly, I thought the Netflix docudrama released about him made a pretty good case that his PR team reached a lot of influencers to declare his innocence and call his victims crazy money-grubbers during the trial phase, scrambling public opinion. Something similar happened during the Depp-Heard trial.
I think the author of this article makes some interesting points, but ultimately it's a miss. The severity of the crime doesn't matter--it's rating dislike.
https://feminegra.com/why-women-like-meghan-sussex-are-judged-more-harshly-than-violent-men/