iPhone user here:
I’m sorry if this is a really controversial question, but I really enjoy the system-wide transparency and glassUI of iOS. I want to migrate to Android, but the big manufacturers (Samsung, Google, OnePlus, etc) all have a flat UI design by contrast. In my research, the closest I could find is MIUI, but the phones that run MIUI don’t support all the carrier bands in the USA. Does android really not have the option of a glassy transparent UI?
You can download from the playstore countless of launchers. They will replace the default one and will change graphic and stuff (so no matter what brand you pick).
They’re also pretty customizable so you can basically recreate what you like the most.
That said, I never used one as I don’t care at all about the ui look.