Mukund R's Key Ideas from The Tao of Coaching
by Max Landsberg

These people need to be trained or mentored to perform well with their tasks. Over time they can become good asset to the team.

These are your high key people that can independently work in the team, as well help to mentor or train others. They can also help to look at other aspects of the work like improving performance, automating repeatable tasks, etc.

These people need to be nudged in both aspects of the work. If not showing improvements, it is better to redirect them for tasks that better align to the skills, goals or both.