Your mention of Zebras reminds me that, yes, Sony makes it quite simple and convenient to use this method as one way of monitoring and nailing correct exposure..... I was surprised rather a while ago when in another forum I kept referring to using Zebras and the people on that forum obviously didn't get what I was talking about. We all muddled around for a bit trying to figure out what was causing our apparent lack of communication until finally at last things became clear. There was good reason for that confusion. At least back then (and possibly still now, I don't really know) Nikon did not utilize the Zebras thing, or or if they did it certainly was a mystery to many Nikon Z series users and apparently wasn't nearly as convenient as it is with Sony. I don't know about Canon's approach to this.The A1ii is twice the price of the A7RV here. Even when I bought the A7RV the A1 was a lot more expensive and the A7RV had some advantages. I got a lens for the difference in price. Anyway, I don't really need the speed of the A1.
As for what I shoot, it's pretty varied. From travel to landscapes and cityscapes, birds, planes, trains, nature, astro. I hope this answers some of your questions.
As far as Nikons and Canons go, I've never really liked either of them. One of the main reasons I chose Sony is that I have had an RX100iii for ten years and it is such a brilliant little camera. In fact, about 9 months ago, I bought a very slightly used RX100vii. I am an exponent of ETTR and being able to use Zebras for correct exposure is an absolute game changer in my opinion.
At any rate, I love my Zebras! My Sony cameras and I don't leave home without them!