Content blockers on iOS are severely limited compared to what's possible with powerful extension mechanisms (Firefox, Chrome before Manifest V3) or built-in ad blockers (Brave). So there's not really differentiation on a technical level, which is where uBlock Origin was always strong. On these other platforms, there was a lot of innovation going on when I was in the space (2020), especially against sites that actively try to circumvent ad blockers. On iOS, there's not much that can be done. At least unless I missed some major developments.

As for the lists of resources to block and DOM elements to hide - which is by and large all an iOS ad blocker is - most just use the popular ones like EasyList with a few additions. uBlock Origin has a good track record of maintaining additional filters, so I think there's reason to believe it'll work better than most.

But all in all, for these two reasons, you probably won't notice much of a difference between different ad blockers on iOS.