One thing that really caught my attention with this list is the abysmal warranty offered by these companies.
The majority offer 1 year on the entire bike.
Tern offers the most with 5 or 10 year on the frame.
But for an ebike, these short warranty periods are a massive red flag for me. These electric bikes are more complex compared to an analogue bike, so their warranties should be more robust: lifetime on the frame, 10 years on the motor/electronics, 5 year on the battery, and 2 years on stuff like the pedals and fenders/racks would be a minimum to start with.
Especially on something like an ecargo bike, which someone might be using as a car replacement. 1 year warranty is a joke.