Well, as far as I know, that is an special case of an essay.
And this you can test onsite.
The kind of essays I had to write in schools were more about nice sounding words and less the content. CheatGPT can produce nice sounding words, so I am hoping that the focus will move towards rewarding content.
Knowing how to produce an essay is exactly the same as "analytical thinking, research, and argument skills" with the added challenge of making it legible to a reader — which is what makes those skills useful.
I suppose, but having written plenty of essays as an adult I can say with complete certainty that nothing I learned from my 5 paragraph days was of any use. No one, not you, not your teacher, not any real life audience for any topic you would be presenting on or publishing for, wants to read anything remotely close to what you're forced to write in school.
What you were forced to write in school. I readily admit that I had an quality of education several SDs higher than usual, but the trite "5 paragraph" nonsense is neither universal or (more importantly) inevitable.
And if they want to teach special skills, like writing essays without computerhelp - then you can test that onsite.