We have been using the EasyFold for 4+ years now on our delivery trucks and they have held up the best.
Most ebike designed rack will do the job nicely but we have found that the Thule offers a lot of features that the other brands don't and are really the best quality, well-designed racks that work with pretty much any electric bicycle design. The small footprint when folded, ability to handle 1 1/4" & 2" receivers, easy transport wheels, ramp and more make this a nice option.
I purchased a Kuat rack in the past and the issue I had was it didn't work well for my urban bikes with fenders and not being easily swappable between vehicles due to different hitch sizes. Great rack but a little more limited.
We just find that the wheel lockdown design limits many bikes with fenders. If you ride MTN bikes then your options open up and then the brands listed above are great options.
hope this helps,
Will