Flanagan was inactive for over a year and then lost against a fighter who was unproven at world level. If he beats Prograis next month then obviously he'll move up the rankings.
Hughie has had two fights in the last 28 months. A loss against Parker about a year ago and a win against Sexton. Not good enough to be riding that much higher at the moment. If he beats Pulev next month then he will move much higher up the rankings.
Jamie McDonnell has also been inactive over the last couple of years and has just been destroyed.
Gavin McDonnell is on decent form, but Yafai and Hall were solid domestic level fighters rather than world level opposition. Like Flanagan and Hughie, if he wins his fight next month then he will move much higher up the rankings.