I've been using a variation on the "Code Review" example for years, and really like it. I give the candidate some fairly straightforward sample code[1] that interacts with a Python library[2] along with a couple user stories that they are expected to implement. I tell them I'm both their product manager and pair programming buddy, and that they should ask me any questions they might have, use ChatGPT, consult Stack Overflow...whatever they do to solve the problem at hand because I'm just interested in seeing how they think.

No system is perfect, but I have a 100% success rate with the engineers that have been hired using this model, and several years of data to back it up.

[1] It actually has a few subtle bugs in it that I'm always curious to see if they'll catch.

[2] The job in question requires working on a Python web app, and so I assume some basic Python knowledge.