I have their smart colored BR30 and a handful of smart white A19 bulbs and all work flawlessly with SmartThings. Debating picking up some of these as well for the rest of my lights. Sold by VM Express but eligible for Prime. Comes out to about $5.50 for a smart BR30. FYI, a hub is required, cheap option linked below as well (even comes with an A19 bulb)
Sylvania Lightify BR30 On/Off/Dim Smart LED Reflector Bulb (Needs Hub) | 73807 (4 Pack)
https://www.amazon.com/dp/B07JDSL…4CbDD
Cheap hub:
SYLVANIA 71932 SW Zigbee Starter Kit, Includes: (1) A19 Soft White On/Off/DIM 60W & (1) Lightify Gateway
https://www.amazon.com/dp/B073M62…4CbX7