Texas and Oklahoma are most definitely bluebloods. Both in terms of national titles or conference championships, player awards, and fanbase.
I would put Georgia as a Newbie. Prior to their recent run, they only had one title in 1980.
Notre Dame, is most definitely a blue blood, much as I hate to admit it but has been severely overrated for the past 40-50 years.
I don't think Nebraska is coming back but they certainly have a passionate fanbase. It seems like their bread and butter was farm boys. How many farmers are there even anymore?