I've got a Zen77 that I'm going to be installing in my bathroom. We have a nightlight plugged into the outlet by the sink, but there is only a single outlet and it often gets unplugged for a hairdryer, to recharge a beard trimmer, or a toothbrush, etc and then doesn't get plugged back in.
I need 3 LED bulbs, around 4000k color temperature, that can dim to very low levels to use as a night light.
And before anyone suggests it, I do not want to use a smart bulb.
Except for the color temperature, I would recommend the Philips WarmGlow dimmable bulbs for this application. They work very well in a similar location for me. But I want the lights to come on at about 3% and be very reddish - so they don't wake anyone up. While 4000K is more like daylight.
In my bathroom I have a GE dimmer switch. I also have 8 Amazon basics 60W equivalent dimmable LED bulbs and it will dim down until the bulbs are off. At night when someone walks in the bathroom the lights come on around 14% which is just barely any light. This is just enough for going to the bathroom in the middle of the night. If I go any lower than 10% then the bulbs are off. The bulbs are 5000K, but I assume you could find one at 4000K.
I know you said no smart bulb, and that is probably a good thing. Most smart bulbs I have seen typically have very high low brightness levels. I have 2 ecosmart bulbs in our bedside lamps and at 1% brightness, it is still rather bright. Easily bright enough to see everything in the room very well. The 8 bulbs at 14% in my bathroom is less bright than the 2 lamps at 1%
I know you said not smart bulb, and you've likely already considered this....
If you use your Zen77 in the control mode (i.e. lights not wired to your bulbs) then get smart bulb(s) that will be controlled by the Zen77 thru either the hub or direct association.
In theory, smart bulbs should be able to operate at a lower light level than normal dimmable bulbs. This is because the LED bulb control electronics are always powered.
There will likely be less flickering than a dimmable bulb for the same reason.