You can visit https://csa-iot.org/csa-iot_products/ https://csa-iot.org/csa-iot_products/ and see which devices have already got Matter certification (of the on

You can visit https://csa-iot.org/csa-iot_products/ https://csa-iot.org/csa-iot_products/ and see which devices have already got Matter certification (of the ones you listed, Samsung and LG which makes sense considering they also sell home appliances). Then there's the likes of Ikea, also with their own line of smart home devices doing just fine as well.