Selle SMP ebike saddles are where it's at!
I've tried the smaller saddles from Selle SMP available in the US and for me they are better than traditional (non-cut out) saddles. But, while on bike tour in Germany I found their line of 'ebike' seats. They are much wider in the sit bone area and the cut out in the middle is HUGE!
I have ridden both the ebike medium and the ebike large and these seats have resurrected my upright riding career. I cannot recommend them enough.
Available on the internet. Super heavy, but who cares!