Android Enterprise - Statusbar
On Android Enterprise in kiosk mode, it is possible to block status bar expansion with MobiControl. However, how the notification icons is shown in the status bar or notification bar/panel depends on how the particular device firmware is implemented by a particular OEM brand development team. You might need to check if the Samsung 's Knox-Configure (KC) can support what you want. If so, a per-device KC license need to be purchased to have such feature implemented on your device.
To disallow end-user from using the single "Settings" icon in the expanded status bar to go to the device's Settings app, the usual approach is to use application-run-control blacklist in MobiControl. This applies to any device brand.
For the various user-configurable icons (e.g. Wifi toggle, volume/mute, Bluetooth toggle, etc.) shown in the expanded status bar on Samsung devices, I think the paid KC service does support their configuration, and can possibly have most, if not all, of the sensitive ones removed.