I honestly doubt that the Pro/Ultra will come with dual IMX890 periscopes, mainly due to actual space constraints, especially since I can imagine how big a 140mm periscope would be with an 1/1.56" sensor like the 890.
But I can be wrong, which in that case Oppo would be on the top of the foodchain.
The Find X7 series is tipped to launch with the most powerful cameras OPPO has developed for its smartphones to date. Now, famed leaker Digital Chat Station has weighed in on this topic with the shooters' most detailed specs dump yet. It asserts that the highest-end Pro and Ultra variants will have 4 sensors of the most on-trend resolution, whereas the vanilla X7 is depicted as essentially a OnePlus 12 but slightly better.