Since you plan on riding mostly paved with minimal hills, many bikes will work for you.
We have a friend who has the Rad City - be aware that it has a direct drive motor which causes drag when not pedaling. Husband rode it last week and did not like it because he said when he wasn't pedaling, it felt like the brakes were on. Not much coasting ability.
Check out the Aventon line, if you happen to have a dealer near you, or a shop that is willing to service it:
Discover ebike cruisers for leisurely rides. Comfy & versatile, these electric cruiser bikes unite comfort & convenience. ✅ Over 1,800 authorized dealers for service & test rides ✅ 2-year warranty ✅ Fast & free shipping over $100 ✅ Ride more. Be happy.
www.aventon.com
Since you want the bike to do most of the work, a throttle - which these bikes have, night be of interest to you.
I ride a Giant La Free E+2 - you might take a look at that one, also:
Here’s a totally unique and invigorating new way to ride. This new E-bike lets you ride farther with less effort. Explore neighborhood streets, ride for fitness...
www.giant-bicycles.com
No throttle, but very easy to ride, and as much or as little assist as you want. It's a mid drive motor, and more than adequate for your needs.
Like I said, there are lots of bikes out there that would satisfy your riding requirements! Best to try as many different models/motor styles/etc. as possible, to get a real world feel of what you like best. That's going to be a little difficult right now, as many dealers are out of many models. But, still suggest you try riding whatever you can find, so you can clarify what you like, and what works best for you.