I’ve been finding oddities with how ATC identifies aircraft lately. I think since SU12, mainly.
There was this:
And then the AAU2 beta, I’ve flown the 787 quite a bit and they just identify it as “Boeing” rather than the type designator. I think they are also describing AI aircraft this way, too, as I’ve head ATC warning other aircraft of “Boeing” well after I’ve landed and parked.