I read a few articles about this last year. The definition of blueblood is subjective. While most seem to agree on UNC, Kansas, Kentucky and Duke; not everyone agrees on UCLA (hasn't done much lately), Indiana (hasn't done much lately), UConn (success has been too recent and over a short period of time).
Note that the stuff in parenthesis is arguments made by others - not my opinion.
Also note that the networks were happy to call us bluebloods leading up to last years Final 4 when they were trying generate interest and it suited them financially (they didn't want a Final 4 with no bluebloods).
We're bluebloods as far as I'm concerned. If we get left off someone else's list, I have 5 NC's to console me.