the #1 type of bike selling today are kids' bikes.
i think #1 in adult sales is the big category of hybrid bicycles.
e-roadies are generally more expensive than other e-bikes.
New e-buyers may not be dedicated cyclists but want practical transport inexpensively. Wide tires, throttle, low to the ground make it easy. no one cares about double diamond, thin tube, classic frame design.

Here's mine - a 2020 model. Ultegra Di2. Weighs 30lbs with pedals and bottle cages. No throttle.