Baker or Delaney will probably get the most establishment support. Delaney reps Montgomery County, while Baker reps Prince George's. As both are the highest populated in the state, turnout, as well as appeal in the Baltimore area, would likely decide the primary (this assumes Delaney runs).
You don't think Alec Ross has a shot?
Doubtful at this moment, since he doesn't have much name recognition. Of course, that could change.
They say he is something of a genius.
Anyway, Bongino is just a semi-bizarro-bertarian, like Gary Johnson, Bill Weld, and Nicholas Sarwark.