Small tool that allows to search in the channels or layers by pressing Tab when the dropdown channels menu is open.

You can actually change the hotkey at the beginning of one of the py files.

I don't have access to a Nuke 16 so I can only guess it's not compatible, due to the introduction of PySide6.  

Thank you to the tabtabtab creator, I used this script extensively to create the interface (https://github.com/dbr/tabtabtab-nuke).