Based on the list of who will be in the 1,500, the following is the world power rankings in the 1,500:
1. Faith Kipyegon
2. Laura Muir
3. Gabriela Debues-Stafford
4. Freweyni Hailu
5. Elinor Purrier St Pierre
6. Winny Chebet
7. Rababe Arafi
8. Linden Hall
Those are the only women with sub-4:00 qualifying times, and I think it will take sub-4:00 to medal. You have to think that Faith Kipyegon is a heavy favorite for gold now and Laura Muir is a heavy favorite for one of the other medals. Any of 3-6 seem like a good bet for one of the other medals. Then, Arafi and Hall are good runners, but not quite sure if they are medal contenders. Honestly, this is one of the weaker events in the Olympic program this year.
Yeah I don't. think 6-8 are true contenders. Winny Chebet is good but has never shown 3:55-6 capability. You are missing the 2nd placer at Ethiopian Trials, Welteji. She just PB'ed in the 800 with a 1:59.46 and is listed as 19 years old. She won Gold at World Juniors and looks quite young. Could be a factor.
Just went off of qualifying times on World Athletics site, and they didn't have Welteji's updated. I see that she went 3:58.93 in Hengelo, so, yes, she is definitely a contender, and this event seems primed for an up-and-comer to medal. Maybe Winny Chebet has one last good race in her?