They put all those other names into her last used diaper, and shake it up. Then they throw the diaper at the wall. Whichever names stick to the wall, split up her shares evenly.
Don’t think this is correct - minimum ownership stake in the NFL is 30% and they don’t count generational split among parents and children like they do with husband and wife.
The other ownership stakes are in trust for the kids and grandkids with Virginia controlling it. So she controls around 80% or so of voting shares. They just have it in kids and grandkids names for estate tax purposes.