Drop bars means an element of speed and aerodynamics, this goes against most e bikes.
The easiest way to get more speed on my sit up and beg ebike (for the same power assist) is to get my head down, tuck my elbows in etc, and I get a bit more speed, but I look like a dick. My bike is ludicrously heavy, but it's got a 6 year on the back for a lot of the time, and I'd rather have an integrated rack rated for a child seat.
The power assist should cut off over a certain speed, and those speeds are very easy to attain on a road bike.
I've commuted by ebike for just over a year, and am now at 2600 miles. There was a month where I went back to my normal bike, as I had a rear puncture, and the slime didn't fix it instantly, but it was easier just to swap bikes for a bit, rather than watch several instructional youtube vids and getting the toolbox out.
I charge every couple of days, but some days I do 17 hilly miles, some days just 8 as a normal commute, working from home 0. My range varies depending on level of power assist. The only time I use gears is when I've accidentally out of battery (happened once or twice in a year after unexpected long journeys, and I'd forgotten to charge) otherwise I just use 1 or 2 gears.
If you can commute fixie, single speed with power assist should be easily doable.
I'd look at the single speeds with gates drives
https://www.tenways.com/pages/cgo600-proShove a light rack on the back and throw on luggage. Also not too heavy bike wise.
Gates drives have also revolutionised carrying your bike, you no longer get covered in oil and it's fantastic. My e bike has a chain, but my daughter's bike is gates drive, and they are so clean.