I am so happy I found this thread, I too am way too invested in model lives/gossip. Some stuff I've read:
Elsa Hosk: had a drug and alcohol abuse problems when she was starting to get famous, she recently talked about it on a Swedish talk show.
Taylor Hill and Jasmine Tookes: rumored to be witchy and not very nice. I've always found the YouTube video where Romee and Jasmine swap their diets so cringy, because Jasmine seemed to be pretty stand-offish and like a girl I would probably feel super insecure about (she's also gorgeous).
Sara Sampaio is rumored to have hooked up with Harry Styles back in 2015, and now seems to be single after a long relationship with Oliver Ripley with whom she had some money issues/distrust (read Sara Sampaio’s beau cleared of charges in alleged AmEx scam on Page Six).
Yasmin Wijnaldum is now dating Gossip Girl reboot actor Thomas Doherty, she was also with G-Eazy who left her, and they did lots of c0ke together - no surprise there.
I've always wanted to know what the deal with Leo DiCaprio and models is - is he really gay and they're paid to be seen with him, or? He's also currently with Camila Morrone and they've been together for quite some time, but I'd say that she got "lucky" that the pandemic hit so he has no tempations to leave her for somebody else (also the Victoria's Secret show is cancelled so that makes it even harder for him lol). I don't think he's gay but a lot of people do, and Kate Winslet further stirred the rumors up when she said she knows a lot of closeted actors (??) .
Regarding Hadids and Kendall: I 100% believe Bella and Kendall dated, The Weeknd basically outed her in his songs and - have you seen the pics of them together?