I'm just getting a chance to really go through @Topicmaster1010 excellent previews for the trials here. The W 400 IM is incredible, and frankly I didn't realize Canada was so stacked in this race.
4 Women have entry times under the OQT, with three of them having times this season that would have gotten them into the final in Tokyo (and the last two WCs). Then another two actually did compete in Tokyo.
Honestly, passively thought of this race as Summer et al. But there's some serious talent here. Should be a fun race! (for second, anyway).