All TCL TVs support HDMI 1.4, but some TCL TVs support HDMI 2.0, and HDMI 2.1. You could confirm the details with the call center agent based on the model number of your TV.
Govee has the most TV backlighting products, but the manufacturer isn't the only option. Like the AI Sync Box 2, the Philips Hue Play HDMI Sync Box has also been updated for HDMI 2.1 compatibility.