aerobat - 20,000+ hrs.
Autothrottles reduce at 22'. As a new guy I let them. It made all the CKA and FO's VERY nervous, especially when you start the flare following the HUD guidance. Light twin (737).
30-40' in a jet? Nope. In a turboprop?
Actually some turboprops you could go to idle much higher. Twin Otter landing flaps up, with enough energy, was a pretty high altitude power reduction.