The upper status bar can be adjusted on the LG device. The settings allow you to change the colour of the status bar, whereby only predefined colours are available. Unfortunately, a separate colour selection is not available.

Also for devices with a notch, this can be hidden by setting the color of the status bar to black.

Another way to customize the status bar on the LG device is the app limit, which allows you to reduce/enlarge the radius of the upper screen content.

Android 9 | LG UX 9.0
Customize Status bar -  Open the  Settings
Customize Status bar -  Tap on  Display
Customize Status bar -  Tap on  New Second Screen
Customize Status bar -  Tap on  Custom
Customize Status bar -  Choose desired  Color
  1. Open the Settings
  2. Tap on Display
  3. Tap on New Second Screen
  4. Tap on Custom
  5. Choose desired Color

LG Instructions