Moving and pulsing lights

Need some feedback from lighting experts.

Whats the ‘best’ way in terms of performance for creating Movable pulsing lights?
Ive tried Spotlights with a Light function, Rect lights and also Emissive.
Emissive seems the best performing but cannot get them to illuminate the geometry they are attached to, which is also Movable.

​​​​​​​Think flashing lights on a moving plane or car of some sort for what I am trying to achieve.