Windows Autopatch Client Broker is used to perform readiness checks on the device. This data is used by service to determine which devices are ready to be managed by Autopatch. Also, this broker enables automated log collection to help diagnose any tickets or issues reported. You can install this on-demand basis. More info on this here - https://learn.microsoft.com/en-us/windows/deployment/windows-autopatch/deploy/windows-autopatch-client-broker 

Microsoft Update Health Tools play is required for the Expedited Quality updates feature to work in Autopatch. This is installed with KB 4023057 or you can manually install from Microsoft Download - Update Health Tools. 

You can use a PS scripts or Add Remove Programs to confirm the presence of the Update Health Tools - Refer - https://learn.microsoft.com/en-us/intune/intune-service/protect/windows-10-expedite-updates#prerequisites for details and more info. If your devices are receiving regular updates from Windows Update, then your devices have the UHT client installed. Note that, Update Health Tools is only required for Windows OS versions older than Windows 24H2. 

More info on Expedite update can be found here - Get the most out of expedited Windows quality updates | Microsoft Community Hub