Not an offically compatible illuminance sensor, but there is a community driver for a Xiaomi Mijia light sensor. Xiaomi devices don't like incompatible repeaters and like many Zigbee devices, they will respond very poorly and tend to fall off the network if you have repeating bulbs (e.g. Not Sengled) on the same Zigbee network, so do keep that in mind.
If you keep your Zigbee network free of incompatible repeaters and bulbs, there are some Xiaomi devices that are actually quite stable. I cannot say for sure, but this light sensor might be one if you want to give it a shot. This is a Zigbee 3.0 sensor, but I have no experience with it. You can ask in the community and I'm sure you'll get feedback.
