Real consensus boards - not a new model, several already-published third-party rankings for the same player pool blended into one ranking (a missing-from-a-source player is imputed at that source's own real length + a penalty, not excluded - see the README for the full methodology). Updates weekly - real breakage in an individual source is expected occasionally and degrades to "fewer sources this week," never a missing board.
Real minor leaguers already in an MLB organization who haven't yet debuted in the majors - NOT the upcoming draft class (see the MLB Draft Board tab for that).