Thanks for responses. I have thought alot about electric cargo gravel bikes recently. I think at some point I'll build a mid drive bike plus igh rear hub with cargo racks for the purpose of climbing hills and doing deliveries. One guy I talked to recently said that one snowy day he made $700 doing doordash.

I've had experience with a cyclocross bike with a rack and panniers, but that bike wouldn't be any good for my hilly area unless it were electrified. Probably the most serious option would be a cargo tricycle.