I never understood why Samsung phones were constantly receiving praise by tech reviewers while LG got crapped on. Samsung always wanted to do things their way -- different (shitty) UI, Samsung versions of all the core Google apps (but worse), reorganizing preferences for no reason, the stupid bottom button placement, non-remappable Bixby button, aggressively killing apps for power management and breaking widgets, etc…
Samsung, for me, just works. It's a bit obnoxious to have doubles of apps, but otherwise I don't have a lot of problems. It's funny you mention Bixby key because none of those phones you listed have one - I supposed you could argue the S20 does, but the first thing I did was remap (using Samsung's built in controls) it back to the power button and I was on my way. I'm only reminded that Bixby is a thing when people complain about it.