GetCurrentKeyProfile is a method on the UEnhancedInputUserSettings object. Documented at UEnhancedInputUserSettings::GetCurrentKeyProfile | Unreal Engine 5.2 Documentation
FindKeyMapping is at UEnhancedPlayerMappableKeyProfile::FindKeyMapping | Unreal Engine 5.2 Documentation
FMapPlayerKeyArgs is at FMapPlayerKeyArgs | Unreal Engine 5.2 Documentation