Preface with saying I like ass/thighs the most for physical attributes. Also take into account the type of content that's floating around of each model to some degree.
1) Jae - absolutely gigantic with height and like the squashing related vids.
2)Boberry - huge and hot, content isn't the best but she's gorgeous and mobility at that size is astonishing.
3) Roxxie - super super cute, love how she carries the weight and makes solid content despite nothing really hardcore/overly sexual.
4) Plump Princess - tall, hot, maybe my favorite ass in terms of shape and size. Again, enjoy the content, specifically when dominating a partner.
5) Lady Sublime - tall (sensing a theme lol) and has this IDGAF attitude, she's hot and she knows it. Variety of content and enjoys getting bigger.
6) Jazz - freaking massive ass and tall, like the squashings with FlatJack but sometimes wish she used others and there was some panic for the victim.
7) LisaLou - another incredible ass, seems to love gaining more than almost any other model. Has some solid content, the makeout vids with Aurora with the contrast get me bothered.
8) Kellie Kay - when she was in her prime, she was one of the best. Some squashing content and a little hardcore, wish there was more. Carried her weight VERY well.
9) Caitidee - also seems to enjoy the feeding game, has some hot b/g vids and other content with variety. Don't love every aspect of her body but she's a total babe.
10) Erin Green - super hot when she was at her heaviest, LOVE the ICD(?) of her with a small japanese man. I love contrast and imposing her will on him with her huge body was something else.
HM: Brie Brown (insane ass and talks dirty), Viva La Valerie (also crazy jiggly ass, love the facesitting/squashing vid) Lailani
Not sure if Amazon Amanda would count, but she'd be in there as well.