UE 4.26 Niagara | Can I make a ribbon move with a static mesh socket *if* the static mesh is from another emitter?

Not entirely sure what you are trying to achieve because it still sounds rather vague, only if you can provide some more visual references, but if you want better substitute of Location Event, try Particle Attribute Reader which is much cheaper and supports GPU compute sim (particularly helpful for UE 5.1 onward for supporting GPU ribbon).