Cybertruck is vaporware until proven otherwise. It's an interesting idea, it solves some fundamental efficiency flaws with the classic pickup truck design with its shape, which I think needs to be done to make an EV pickup truck even sorta-practical. But there have been zero (0) production mules spotted. Zero updates on production design to pump orders (and orders would definitely pump if they actually had an update, people are thirsty for a truck with those specs). At this point it's as real as the Hot Wheels versions are
The Rivian (which is also vaporware until proven otherwise, but seems a lot more solid with its sister car rolling off the line now) is a true SUV where the X is much more like a not-really-that-tall wagon. It'll get much, much worse consumption (Rivian's rated normal-conditions consumption is pretty much worst-case winter consumption going uphill in the snow on the X) and therefore charging, even fast charging, on long trips is going to be pretty rough compared to doing the same speed and mileage in an X. But it's a really, really nice package with capabilities no Tesla has and no Tesla is slated to have anytime soon. We'll see if they can make them consistently, in volume - as we know, that's the challenge.