"Nebraska - Arguably the most interesting case of the seven. The Huskers' recruiting has taken a step back since joining the Big Ten, despite the fact that their results on the field have been fairly good. Their Big Ten classes have had, on average, two fewer VHTs and and marginally lower rank than their last five classes in the Big XII. Texas and Kansas, two Big XII states, were first and second on the lists of states from which Nebraska pulled VHTs in their last five years in the Big XII.
In the two classes since joining the Big Ten, those two states have dried up as sources for Nebraska, without being replaced by any Big Ten states:"
Charts at the link shows it