As a Michigander it’s funny to me that 4 major nationwide pizza chains are from Michigan (jets, hungry howies, little Caesars, and dominos), I don’t really think of Michigan pizza as particularly noteworthy.
Long time sf bay resident I think best east bay Detroit style is fat apples in Berkeley or El cerrito. (And since it keeps coming up in the comments, best east bay deep dish/chicago style is little star over Zachary’s, I live between the two off solano and stand firm in this decision)