There is one new option in 2019: the ring smart lighting series from Amazon. They use a proprietary frequency, so there’s no direct integration. However, They have several battery operated lights which can be networked to their bridge and give you some automation. These are pretty cool devices and have a battery life of several months instead of just several hours. 
You can use an echo routine as a “man in the middle“ to get some smartthings integration that way.
I don’t think you get access to the motion sensor that is built into the light, and I’m not sure you can turn the motion sensor activation off, but you can at least turn the lights on and off remotely if you want without needing movement in the area.
So they aren’t a perfect substitute for a smart mains-powered light, but if you’re OK with the light always coming on when there’s motion in the area and you just want to also be able to turn them on at other times, these will fit some use cases.
https://www.amazon.com/dp/B07KXQ85NW/
.