I am just talking right now. Doesn't mean it's going to be true.
From the NBA mocks updated in November:
Is this a joke? Do you even know what consensus mean? Anthony Davis was a consensus #1. He would have been picked #1 regardless of team needs.
If 90% of your list isn't Zeller, so it's not really a consensus now is it? You don't also account for the fact that a lot of Mocks are also keeping team needs in mind. So that skews the rankings.
BTW: 4 of those sites you listed for Zeller has someone other than Zeller as the top prospect. You might want to check your sources again. So if you revise it, the rankings are still all over the place and no one has distinguish themselves as the top dog in this draft.