They believe that supporting and developing their people is their main job. Execution is just a prerequisite to being able to do the rest.
I've never encountered a servant leadership styled EM that is not also a good IC.
The only thing I can think of is MBA disease. But that’s rent seeking not productive management techniques.
1. Psychological security.
2. Crystal Clear targets, planning, goals, written down. To paraphrase this, a top manager will write their ICs an 8-12 week JIRA backlog. Obviously, these goals will iterate. However, the ironclad clarity is essential.
3. Positive, effective, coaching and feedback at the principle skill the IC performs. Aka, coding.
4. Lead by example. Conspicuous, hard, effort, devoting majority of time and energy to managing down and shielding.
The issue is simple. All of the above requires sweat from the manager.
Manager's are lazy, and nobody is watching them manage their IC's.
I am a massive sufferer of imposter syndrome, I do my best to help everyone and smooth over things and set direction in a clear way with as much freedom in execution as possible.
but i am always second guessing myself. I know I am almost certainly a middling manager (if not a bad one), but I would like to improve.
Not because I love doing it, but because I don't trust that anyone else in my position (or who would take my position) actually wants to improve.