When I exported the highlights of a page to Obsidian, I noticed that the highlights are exported based on the created time. So, if you highlight the first sentence last, and then export it, it will appear at the end of the export.
Having them sorted by their location on the page would make more sense (at least having the ability to sort by Created time and the page location).
This is particularly useful to have the highlights in the context based on its location!
FYI, getMemex has a similar functionality.