Faster way to add categories to entry

[nitech]

Description

I would like a faster way to add categories to entries.

Right now, I have to click a button, and then traverse the tree or list of categories.

I would like to be able to add categories by either:

a. Typing and having a list (with full tree if category is a structure) populated below. Key navigation, Enter to select.
b. Selecting by navigating tree (same as today).

[nitech]

Perhaps use Selectize?

[bencroker]

This discussion can probably be closed, as in Craft 4, it is possible to search and filter when selecting related elements (including categories).