The EMUI does have a lot of useful customizations like dual apps, home screen transitions, fingerprint gestures etc.. (suggestphone.com)
Plus, you get a lot of useful customizations like 3 finger screenshot, double tap to light up the display, single hand mode, and few others. (suggestphone.com)
OnePlus» OxygenOS is a light skin that doesn't change the look and feel of Android much, but does offer many useful customization options. (androidauthority.com)