Explanation

Box 1: iOS
Azure AD Conditional Access supports the following device platforms:
Android
iOS
Windows Phone
Windows
macOS
Box 2: DeliveryRuleIsDeviceConditionParameters
The DeliveryRuleIsDeviceCondition defines the IsDevice condition for the delivery rule. parameters defines the parameters for the condition.
Box 3: HTTP_USER_AGENT
Box 4: DeliveryRuleRequestHeaderConditionParameters
DeliveryRuleRequestHeaderCondition defines the RequestHeader condition for the delivery rule. parameters defines the parameters for the condition.
Box 5: iOS
The Require approved client app requirement only supports the iOS and Android for device platform condition.
Reference:
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional-access-condition
https://docs.microsoft.com/en-us/azure/active-directory/conditional-access/concept-conditional-access-grant