Quiet wealth in Metro Detroit? 9-figure families still left?

[mark.vandorn]

We don't really hear about people outside of the billionaires:

Hank & Doug Meijer of Grand Rapids, $8.3 billion [[Meijer)
Richard DeVos of Holland, $6.8 billion [[Amway)
Dan Gilbert of Franklin, $3.9 billion [[Quicken Loans)
Michael and Marian Ilitch of Bingham Farms, $3.2 billion [[Little Caesars)
Ronda Stryker of Kalamazoo, $3 billion [[Stryker)
Alfred Taubman of Bloomfield Hills, $2.7 billion [[real estate)
John Brown of Kalamazoo, $1.5 billion [[Stryker)
Matty Moroun of Grosse Pointe, $1.5 billion [[trucking/bridge)
William Ford Sr. of Grosse Pointe $1.4 billion [[Ford)
John Stryker of Kalamazoo, $1.4 billion [[Stryker)
Roger Penske of Bloomfield Hills, $1.3 billion [[auto)
Manoj Bhargava of Farmington Hills, $1.1 billion [[Five-Hour Energy)
Peter Karmanos of Orchard Lake, $1 billion [[Compuware)

Are there many 9-figure net worth people/families that *still* call Metro Detroit home?