Is the Apple TV model A2737 compatible with the home app as hub?
Can I use this model (A2737) in the newest Home app as a hub?
Question marked as
Yes, but not for native Thread networking, if your accessories rely on that.
HomeKit is supported for Wi-Fi and Bluetooth communication with accessories, and through external (third party) Thread routers than can bridge to Wi-Fi.
Apple TV 4K (3rd generation) technical specifications (A2737 and A2843) - Apple Support