I'll only speak to what I think I know well (I know maybe a shock for many of you), and use judgment rather than data.
In my opinion, the only 6A blue bloods are the four MIC schools and Penn, but the Kingsmen are fading fast. They are trending in the wrong direction and a couple more poor years and they are bounced off my list.
I'm just not sure you can use measurables like sectional and regional titles as a barometer due to the HUGE imbalance of strength throughout the state. A sectional/regional title for Penn does not carry the same weight as one for the four teams mentioned above. I'd say the same for Carmel actually, until recently.