My Alexa dot and speaker looked close. Given you added more requirements I think we moved to multiple devices such as an everyday phone (landline) or cell phone PLUS an Alexa or "this does not exist today."

I use my Alexa dot to make calls and voice quality is far better than any cell phone I've used to date.

-> Sorry folk but at times there is no single product that will do what you ask. If you do find such a thing is needed this is where and why people start a company and produce the thing that isn't being made.