So far, they've only personally explained things to those of us who came here first, but I believe they're usually busy with... preparing the planet for wider habitation.

[Yes, excellent way of phrasing it. No need to mention Primus, nope. Jetfire shrugs, frowning slightly.]

I doubt the same thing that designates a Prime in my reality is what counts here - the Firstforged are Primes because they're the first of our species in this reality, as far as I understand it. The others are Solus Prime, Liege Maximo, Megatronus Prime, Prima, Nexus Prime and ALpha Trion.