That would be interesting because I see no way how you'd have a hybrid (either series or parallel) with multiple motors and gearboxes. What you could do is to have an automatic transmission in a parallel setup and maybe a gear (or two) for the electric motors or a series version where the ICE drives a generator to drive the electric motors (which is how I understand this one works). In that case there would be no gears at all or maybe just two to match the electric motors better to the speed you are driving at.

Can you explain how you think an actual 6 speed transmission (manual or automatic, not 'fake' gears from a CVT) would work with a parallel hybrid? Because the only way that would work is if the electric drive system is entirely optional and just there to relieve the ICE a bit.

Edit: Ah ok, I see it now, so the in-hub electric motors aren't geared at all (they can't be) and the ICE can run across a regular gearbox. So this is a parallel hybrid with the electric motors only coupled in right at the hubs rather than somewhere further upstream. So indeed the electric motors are 'optional', and they are managing the balance by either switching the automatic gearbox to neutral and then use the electric motors to drive the vehicle, not power the electric motors but just use the ICE or a combination of both. This does indeed allow for a variety of different geartrains.