Revert "Revert "Update model_data.h with expanded iMac data""

This reverts commit 5b7a581dc0192945f8c33b78f7ec99361e630d0e.
Revert "Update model_data.h with expanded iMac data"

This reverts commit c8540d280eac5ad35830a3237d30db42d37d7d0b.