Looking for monitor suggestions.

Hello everyone. Posting for a friend.

I’m looking for a new monitor and need suggestions. My requirements

1. I am a data engineer and work from home.
2. Slightly confused about 24 vs 27 inches as my desk size is 90/60 inches. I feel 27 might be too big to work with.
3. I don't game so do not necessarily need very high refresh rate but pls share your experience if it indeed is worth it to go for high refresh rate.
4. Should be height adjustable.

Pls help. Thanks