This is one of those things where everyone tries to reinvent the wheel and then tells you how theirs is better, or rounder, or has lug nuts arranged in a better pattern. The blackstone is about the best bang for the buck in my opinion. I'm sure all the others are fine provided they have a flat cooking surface and some manner of heating it from beneath. Don't get caught up in gimmicks and marketing. Don't overthink it. Outside of that, likely just bragging rights. Mine lives under cover on my porch and is at LEAST 15 years old maybe older and has had nothing but a bunch of tanks swapped out.
Most of the features on new griddles are features I never considered necessary or a decision making deal. You'll need to decide what's important to you and imbibe the marketing fluff appropriately.
One consideration I would pay attention to is the grease drain. I use my cookers on the porch, and I like mine on the edge of my porch and due to the way a porch should slope, all the grease pools at the back, THATS why I don't like grease drain in the front. That's how commercial units in kitchens are and that's cute and all but that's not the environment I'm cooking in. Camp chef makes accommodations for this. Might be worth checking out.