Jerrance is in a totally different category. Like him or hate him, he has been an assistant at HM programs (UI, SMU, Kansas) collecting many accolades as a recruiter. He has a stronger resume than the others, I think he will become a good HC actually, although others may disagree.
Deon in not at the same level. Community college experience is limited and it is not that Deon took community college basketball by storm or he is known to have made a tremendous impact as an assistant. Deon is one of my favorite all-time people (on and off the court), great guy. But I do not think he has the personality to become a great recruiter, he is actually very reserved as a person. I'd still take a chance if there was better evidence of his abilities during his coaching career so far. But it seems most posters are infatuated by the fact that he was once a great Illini player.
Powell has followed a better path than Deon. Not sure he has the personality to become a great recruiter either, but Valpo's relative success will help his career. If it lasts, or if he can capitalize on it while it lasts.
Dee has zero experience but I'd still hire him over Deon or Powell at this point. JMO obviously, but experience is not everything in this business. Yet, an entire staff composed of all these guys would not work. You'd need better balance.