are mid-drive mounting points standard?

[sl_duck]

Does anyone know off the top of their head if the mounting points for integrated mid-drives (Bosch, Brose, Yamaha, Shimano) is standardized at all? i.e. would a frame made to fit a Bosch also likely fit a Yamaha mid drive?
Done a bit of searching but haven't found the answer yet, or been able to find templates for the different brands to compare.
Thanks!

 

[keithd]

From looking at most bikes using these motors the frames are built to each motor so they would not interchange.

 

[tomjasz]

No. And some makers motors don't share the same design. Frustrating!