I got some LED drivers that I flashed with Tasmota firmware and added them to HomeAssistant and it works just fine. My LED strips also have warmwhite LEDs and in HomeAssistant it works. I did set up an Alexa Skill without the cloud with this guide: Amazon Alexa Smart Home Skill - Home Assistant and it works. Only my LED strips aren’t recognized as LEDs with warmwhite but as normal LED strips.