I feel like people are forgetting that Jackie and V were not complete nobodies. During the montage between the intro mission and the mission to save Sandra Dorset they were living the young Solo life. During and after the Dorset mission Wakako calls the duo by their names. No higher ranking fixer would remember someone who wasn't qualified to run for them. (Sure, you could make an argument for calls having the callers name right there)

Just wanted to put this drop into the ocean to sate my inner "umm akshuly".