I ran across these stories as I was looking for this article: https://www.maritime-executive.com/article/historic-cutter-faces-auctioneer-s-hammer. I found the above article through another blog post, https://rnzngunners.wordpress.com/2019/10/17/historic-cutter-faces-auctioneers-hammer/.
It’s interesting that Petrel is the vessel that found them. Other finds by the vessel are https://en.wikipedia.org/wiki/RV_Petrel. Scroll down to 2015, 2017, 2018, and 2019 expeditions.
Here are the two articles on the two Japanese carriers found; that leaves two other Japanese carriers that were lost during the Battle of Midway. I expect they, or another research group, will eventually find the other two Japanese carriers lost during the battle.