No Apple uses a custom slot design. Apple was in fact the first to offer a blade SSD in a production system.
Apple has also used different physical interfaces across the systems over the years. Here's an example of a few:
One also needs to review the drive Phy and onboard logic. Heres a view of this aspect:
Even this has been eclipsed in performance! Apple is now using a Raw flash which is interleaved in the new iMac Pro!