Great, could you tell me which headphones I can use without adapter on Zoom F6, Yamaha DM3, Behringer Wing panels, Focusrite Scarlett interfaces and smartphones?

Currently we're using Beyerdynamic DT770 Pro and some MDR-7506.

They'd also need to be fully passive, as any active processing introduces unpredictable delays of up to 16ms, which is unacceptable when the goal is to check sync on audio and video signals.

It sounds to me like you only see everything as consumer devices for media consumption, ignoring the needs of people using computing devices to create things professionally.