I think Dina has to be the 200 favourite but Elaine Thompson has been quiet. Dina has had her best ever season outside of a champs, though, and she always peaks well, which suggests she might just do it.
Miller-Uibo is a class apart, though. If there’s a 200/400 double possible in Tokyo’s it’s hers. I do think Dina needs to do some 400s and get good at that to match her endurance. Having said all of that, the interesting one to watch in Doha for me is Aminatou Seyni. She’s blatantly got a whiff of the Semenyas about her, and, unless they throw her out in time, I really think she stands a chance- particularly as Miller-Uibo can come unstuck in a championship/ rounds environment. Throw in Salwa Eid Naser and you could have the race of the championships.
Having said that, I think we have the next great 400 talent in Jodie Williams. Just wish she’d finally give up the sprints, where she’s never going to be as good as she was as a junior, and see what she can do...