Kentucky only won 1 title over like a 30-some year stretch before being good off and on over the last 20 or so years.
UCLA only needs to win another one and they're the bluest of blues and it's not close. 2 and they're light years ahead of everyone. If Indiana can win 1 or 2 more, they're up there too.
Obviously their programs are in no position to do that, but the right coaching hire can make it happen quickly (appears neither will make the needed hire, though)
To me, there are currently 3 True Blue Bloods, I'll categorize the others.
True Blue: PEOPLE KNOW
Kentucky: 8 titles
North Carolina: 6 titles
Duke: 5 titles
Faded Blue: No recent success, need a resurrection
UCLA: 11 titles
Indiana: 5 titles
Sky Blue: Not enough historical or recent success, but you know they're there.
Louisville: 3 nattys, 1 in the last 25 years.
Kansas: 3 nattys, 1 in the last 30 years.
Michigan St: 2 nattys, going for 3rd this year.
Bright Blue: Mostly recent success, high school recruits see them.
Villanova: 3 titles, 2 in the last 4 years.
UCONN: 4 titles in the last 20 years.