[KentuckyHillBilly5321]

When I think of blue bloods I think about prolonged success over decades and with more than just 1 head coach.
UK, Kansas and UNC in basketball
Alabama, Norte Dame in football
You can't have 20 blue bloods either. Blue bloods should be the elite of he elite.
Take Belfry  for example amazing program with the GOAT at coach but no one else has had sustained success at Belfry.

Trinity, Highlands, Beechwood, St X and Mayfield to me are those that come to mind.

I would consider Boyle, Danville, Cov Cath and Male as the next tier as these programs have had success with more than 1 coach just not to the level as the true blue bloods.

So, just count the total number of titles.  

But looking at your last sentence made me think about some things.  Beechwood has, I believe, 17 titles.  I'm think 3 coaches won those with Yeagle being the winner of most of them I think.  Their title span is from 1984 to present.

Danville has won 11 under 4 coaches.  They won in '62 under the old 3 class system.  Fielded outstanding teams that fell short in the next 20 years.  Then began their modern run under Duffy in '84.  

The Ads won AAA (unbeaten) in 1984.  3 Class A titles in '00, '01, '03.  The rest were AA titles. 

Winning in 3 different classes is a pretty sound feat whereas Beechwood and Mayfield have never won above Class AA.  

I think that qualifies them as Blue Blood material for longevity, productivity, and competition adaptability.

Beechwood titles
Noel Rash has won 8, 5 in 1A and 3 in 2A
Mike Yeagle won 8
Bernie Barre won 1