Nanoleaf's panels are Shapes, Elements, Lines, Blocks and Skylight, and all of them work as Thread border routers.
Shapes, Elements, Lines and Blocks connect over 2.4 GHz Wi-Fi and Bluetooth. Nanoleaf states that Lines and Blocks do not support Matter, and it lists Elements as Matter ready. Skylight is a ceiling panel that Nanoleaf states is not Matter ready.
Nanoleaf's Thread bulbs name Shapes, Lines and Elements on firmware 8.5.2 or later as compatible Thread border routers.