Try test riding some of quality ( egSpecialized, Trek, Giant) full suspension emtbs. You don't need to be MTBing to enjoy their suspension. Between their low gearing and powerful motors there is nothing they won't climb with ease. While not step through frames their dropper post does help when stopped and makes all difference on steep descents.
NB I'm riding older eMTB with 75nm motor and 11-46t cassette. New eMTBs are 85-90nm with 10-51t cassette.
The only hills I've struggled to get going again are super steep with loose surfaces ie eMTB terrority. Issue wasn't lack of power or gearing just power delivery and breaking traction. Yamaha motors have an advantage here as they deliver power instantly while Bosch and
Shimano need 1/4 turn for motor to kick in. NB if caught in wrong gear use walk mode to help change into 1st.