How to see if Hue devices are controlled using Matter?

Try to get your Hue lights working when you have Removed the Philips Hue App for Homey | Homey

You should try adding the Hue lights using the process described in https://support.homey.app/hc/en-us/articles/9075551662108-Matter-Beta-for-Homey-Pro-Early-2023-

How To Use Matter
To pair a Matter device:

  1. Open the Homey app and select Devices in the tab bar below.
  2. Tap the + symbol in the top right corner and tap on the Homey logo.
  3. Tap the Matter tile to start pairing a Matter device to Homey Pro.
    :bulb:It is not necessary to install apps for Matter devices, Homey Pro will figure out the capabilities of the device without installing any apps.
    Once you tap on the Matter tile, the pairing process will start. Follow the steps on screen to pair the device. Make sure your mobile device is in Bluetooth range of the device you are trying to pair, as the first few steps of the process require a Bluetooth connection between your mobile device and the Matter device.
    :bulb: The Homey App should be updated to version 7.1 or higher, and your mobile device should be running iOS 16.5 (or higher) or Android 8 (or higher). It is not possible to pair Matter devices via the Web App since native iOS or Android pairing is used to onboard the device onto the Thread network (using Bluetooth).
    If pairing is successful, the Matter device will be connected to your Homey, and you can use it as any other device.

If it works without Hue App on your Homey, you are using Matter successfully.