The upgrade in performance for all of these phones versus your Huawei are going to be absolutely monumental.
If you want to keep this phone for a few years, I’d suggest the S23. It’s got 3 years of OS updates and 4 years of security patches and the others are likely to have battery issues in the next year or two(especially the S22, it has known battery drain problems already). Having the Snapdragon on the S23 will almost guarantee you’ll be able to install custom ROMs beyond the end of Samsung official support, as well.
I’ve had pixels since the Nexus 5 and I used to have some sort of Caseology or speck case on them, but in my opinion nothing tops the Spigen rugged armor case for pixels.
I’ve also tried Crave and Otterbox variants; but the rugged armor is my go to for a no frills, extra grippy, pretty thin case. It’s currently 15 USD if you have prime.