It's called nonviolent communication. There are quite a few books on it but I can recommend "Say What You Mean: A Mindful Approach to Nonviolent Communication".
Once you see this pattern applied by someone it makes a lot of sense. Imho it requires some decoupling, emotional control, sometimes just "acting", but good acting, it must appear (or better yet, be) sincere to the other party.
[0] https://www.toolshero.com/communication-methods/rose-of-lear...
As a term of art the "deconflicted", neither dominant / submissive, middle-right is sometimes referred to as the "Dale Carnegie quadrant".
I've been using it for a number of years to diagnose the personality dynamics humans erect around software and tech stacks. I had mused about it, but done nothing, until I came across a SxSW talk about Lacanian analysis of the personalities of various computer languages... just for fun of course.
(Compare Nanos and Docker... see what I mean?)
Next to a Koi pond: “Will you help protect these beautiful fish? Help us by not throwing coins, food, …”