> This is the part that might not be the same in all US jurisdictions (though it appears it is the same in some, someone posted upthread about Iowa having a system like this).

As I pointed out in a reply to that comment, that's a popular misconception – legally, Iowa uses essentially the same land title system as every other US state; the main difference is instead of private title insurance, there is a state government monopoly on title insurance. But Iowans use the phrase "title insurance" to mean "private title insurance", making many of them wrongly think their state doesn't have title insurance at all.

Several US states previously enacted Torrens title, but largely unsuccessfully – few titles were ever converted to Torrens, and in almost all of them Torrens title is either repealed or effectively moribund.

The only place under US jurisdiction where Torrens title is fully mainstream, is Guam. Guam adopted it in the early 20th century, around the same time as the US territories of Hawaii and the Philippines did. It survived in the Philippines, but the Philippines became an independent country. In Hawaii, it was successful in a few parts of the state (in particular Lānaʻi), but otherwise largely not.