Lots of Kasa and Tapo devices on very good sales right now, including a matter over Wi-Fi UL listed 15A light switch. The two pack is on sale for $25. 
As always, if you are getting a matter version and this will be your first matter device, make sure you read the community FAQ about what will be required.
FAQ: What do I need to add a Matter device to the SmartThings app? Do I need a bridge router device?
There are a number of regular non-matter Wi-Fi models also on sale. Those will work with SmartThings through the regular cloud to cloud integration.
I believe all models do require a neutral wire.