Is the Sony Xperia 5 the compact flagship that you have been waiting for? It rocks the triple camera of the Xperia 1 and a 21:9 CinemaWide display, plus the requisite Snapdragon 855 chipset running a clean Android free of the burden of some of the heavier skins.
At 68mm wide, it’s narrower than the Galaxy S10e (69.9mm) and the iPhone 11 Pro (71.4mm), which is a win for ergonomics. And yet it has a larger screen, measured by surface area (plus, no notches, punch holes or any such silliness).
Sony Xperia 5
Of course, that screen has an extra tall aspect ratio, which is perfect…