The Daily Heller/Tree of Type

Today's Daily Heller, from the one and only Steven Heller, has a brilliant Type Tree from Bauer created in 1937 on the occasion of the foundry's 100th anniversary. He's reproduced the extensive text illustrating the tree's myriad classifications and mentions that it's probably not entirely accurate. I'd love to see this community weigh in on Bauer's accuracy in explaining their tree.