I've got an OXO that has worked great since I bought it in 2014. It's an ugly piece of white plastic, but it's efficient, unfussy, ergonomic, and adjustable.
This makes sense due to that end being the gripped side during use.
https://amzn.com/dp/B08DL86ZCQ
I also own the aforementioned Unicorn. I use it for "bulk black pepper" grinding and use this model for finer grinds of white and green pepper.